Mustafa Özmen - Academia.edu (original) (raw)
Papers by Mustafa Özmen
Iktisat Isletme Ve Finans, 2000
In this study, we try to test the econometric implications of real business cycle models using re... more In this study, we try to test the econometric implications of real business cycle models using recently developed techniques on cointegration and seasonal integration. The emprical findings of the study does not support the hypothesis that consumption, investment and ...
Iktisat Isletme Ve Finans, 2009
Policymakers are interested in the general trend of inflation. Headline inflation is subject to d... more Policymakers are interested in the general trend of inflation. Headline inflation is subject to different shocks and contains noise due to the heterogeneity inherit in it. Therefore, core inflation measures, which are better capable of indicating general trend, are developed. Atuk and Özmen (2009) introduced and discussed various core inflation measures for Turkey. Among various measures discussed, trimmed mean inflation
The abstract should be clear, descriptive and no longer than 250 words. It should provide a brief... more The abstract should be clear, descriptive and no longer than 250 words. It should provide a brief introduction to the main theme. This should generally be followed by a statement regarding the methodology, a brief summary of results. The abstract should end with a comment on the significance of the results or a brief conclusion. Abstracts are written in 8pt Times italic. In MSWord set paragraph format of abstract to indentation left and right each of 1.5 cm.
European Journal of Radiology, 1999
Inflammatory lesions constitute an important subgroup of focal liver lesions. They may mimic prim... more Inflammatory lesions constitute an important subgroup of focal liver lesions. They may mimic primary or metastatic neoplastic lesions and their differentiation from neoplasia is clinically very important since management of the patient significantly changes. Radiologists should have an important role in both the diagnosis and therapy of these lesions by performing percutaneous aspirations and drainages. In this review we discussed the radiological findings of pyogenic abscesses, amebic abscesses, candidiasis, tuberculosis, hydatic cysts, fascioliasis, ascariasis, schistosomiasis, and sarcoidosis with a special emphasis on US, CT and MR characteristics
European Journal of Radiology, 2009
Purpose: We aimed to describe computed tomography (CT) findings in patients with peritoneal, omen... more Purpose: We aimed to describe computed tomography (CT) findings in patients with peritoneal, omental and mesenteric lymphoma involvement. Materials and methods: We searched our archive retrospectively to find out patients with peritoneal, omental and mesenteric lymphoma involvement. We found 16 patients with non-hodgkin lymphoma meeting these criteria. CT studies of these patients were reevaluated for the presence of peritoneal involvement, ascites, omental mass, organomegaly, retroperitoneal lymphadenopathy, bowel wall thickening and other associated findings. Results: There were 14 males and 2 females with peritoneal and/or mesenteric and omental lymphoma involvement. Mean age was 39 (range 4-76). Subgroups of non-hodgkin lymphoma were diffuse large B-cell lymphoma (n = 11), small cell lymphocytic lymphoma (n = 2), small cleaved cell lymphoma (n = 1), T-cell lymphoma (n = 1) and Burkitt's lymphoma (n = 1). Peritoneal involvement was seen in 15 patients (93.8%) in the form of linear (n = 12) and nodular (n = 3) thickening. Ascites was seen in 12 (75%) patients. Omental and mesenteric masses were present in 10 (66.6%) and 10 (66.6%) patients, respectively. Bowel wall thickening, retroperitoneal lymphadenopathy and hepatosplenomegaly were also common and observed in 10, 10 and 11 patients, respectively. Solid organ involvement in the form of liver and splenic lesions was seen in 9 (56%) patients. Conclusion: Peritoneal involvement can be seen in many subtypes of lymphoma and most frequently in diffuse large B-cell lymphoma. Peritoneal lymphomatosis can mimic peritoneal carcinomatosis and should be included in the differential diagnosis list in patients with ascites, hepatosplenic lesions and unidentified cause of peritoneal thickening on CT in a male patient.
European Radiology, 2002
Although the most involved organs are liver and lung, hydatid cysts are very rarely seen in the h... more Although the most involved organs are liver and lung, hydatid cysts are very rarely seen in the head and neck region. Only a few cases with hydatid cyst in parotid gland have been reported in the literature. We present the findings of 18 months of follow-up of a case with a hydatid cyst in parotid gland treated percutaneously by using PAIR technique. To our knowledge, this is the first case of parotid gland hydatid cyst who underwent percutaneous treatment. Percutaneous treatment of parotid hydatid cyst seems to be a safe and effective procedure as a possible alternative to surgery.
European Radiology, 2005
The objective of this study was to evaluate the efficacy of transvaginal contrast for local stagi... more The objective of this study was to evaluate the efficacy of transvaginal contrast for local staging of cervical carcinoma. Fifty patients diagnosed with cervical carcinoma prospectively underwent magnetic resonance (MR) imaging before and after vaginal opacification (VO) with a mixture of 25 ml saline and 25 ml barium. T2-weighted (T2W) TSE images in axial and sagittal planes were compared before and after vaginal opacification. Dynamic T1W images in sagittal and fat-suppressed T1W images in transverse planes were also evaluated after intravenous contrast administration. Involvement of vaginal wall, lumen, and fornices; parametrium; rectum; and bladder were noted. Changes in local tumor staging and in treatment planning were also assessed after vaginal opacification. MR results were later compared with surgical pathological findings. Twenty-eight patients who went through surgical staging were included in the study. VO did not change any of the MR interpretations in 14 patients (50%). Correct staging was achieved with T2W TSE images with and without VO (in sagittal and transverse planes) in 78.5% and 50% of the patients, respectively. VO correctly lowered staging in seven and increased it in three patients compared with sagittal standard T2W images. Treatment planning was also changed in four (14%) of these patients. When overall accuracy of MR staging to indicate the appropriate treatment was evaluated, patients would have received the proper treatment in 90% and 79% of the cases when only T2W sagittal images with and without VO were evaluated, respectively. Dynamic gradient-echo images in sagittal planes and postcontrast T1W images in transverse planes evaluated with T2W series after VO, accomplished correct staging in 23 (82%) of the patients. MRI staging in early cervical cancer may be difficult and overestimated, especially if the tumor is slightly extended into the proximal vagina. Use of vaginal contrast medium is an easy, well-tolerated, and effective method to better delineate the borders of the tumor. It increases the specificity and accuracy of MR staging by showing the exact relation of the tumor with the vaginal wall and beyond.
Cardiovascular and Interventional Radiology, 1994
Purpose To evaluate the safety and efficacy of percutaneous drainage of pulmonary hydatid cysts. ... more Purpose To evaluate the safety and efficacy of percutaneous drainage of pulmonary hydatid cysts. Methods Eleven pulmonary hydatid cysts in eight patients were drained percutaneously after 1–2 years of treatment with mebendazole (50 mg/kg/day). Percutaneous needle aspiration was carried out under ultra-sound (US) in six patients and computed tomography (CT) in two patients. Nine cysts were close to, and two cysts were distant from the thoracic wall. After aspiration, hypertonic (15%) saline solution was instilled for up to 35% of the estimated volume of the cyst and aspirated 5–10 min later. Follow-up ranged from 8 to 31 months (mean 16.3 months). Results Neither anaphylactic shock nor death occurred in any of the eight patients. One patient developed fever, ipsilateral hydropneumothorax, and contralateral pleural effusion. One patient suffered from fever, pneumothorax, and abscess and was treated surgically; one developed fever and dyspnea. The volume reduction during follow-up was 47%–93%. The cystic contents turned into a pseudotumor appearance with a thick irregular contour on CT and higher Hounsfield units. On US, the cysts showed a heterogeneous content with internal echoes representing detached and degenerated membranes, and the fluid content almost completely disappeared. Conclusion We believe that percutaneous therapy of pulmonary hydatid disease is an effective alternative to surgical treatment in patients who have failed medical therapy.
European Radiology, 2002
We present unusual imaging findings in the liver of a patient with Wilson's disease . On US, the ... more We present unusual imaging findings in the liver of a patient with Wilson's disease . On US, the liver contours were irregular and its echogenicity was increased with multiple, small hypo- and hyperechoic nodules. Prominent perihepatic fat layer was noted to be increased in thickness. On CT and MR, multiple, small, enhancing nodules were detected in the liver in the early arterial phase after administration of intravenous contrast material. Biopsy was consistent with chronic parenchymal liver pathology with dysplastic changes but without evidence of hepatocellular carcinoma. To our knowledge, dysplastic nodules enhancing at the arterial phase and thickened perihepatic fat layer have not been previously reported in patients with Wilson's disease.
European Journal of Radiology, 1999
The purpose of the study was to present our experience with ultrasound (US)-guided percutaneous t... more The purpose of the study was to present our experience with ultrasound (US)-guided percutaneous treatment of hydatid abdominal cysts. From April 1996 to April 2002, 118 patients with 135 liver hydatid cysts (49 men and 69 women), with a mean age of 40.6 years (range 7 -68 yr.) were treated with PAIR (puncture, aspiration, injection, re-aspiration) technique. Absolute alcohol was used as the cytotoxic and sclerosing agent. Sonographic guidance was used in all patients. The patients were selected from CL, CE1 CE2 after WHO-IWGE classification. All patients were treated with antihelmintic drugs started with 24 hours before puncture and for at least one month after the procedure. All the patients were successfully treated and the mean follow-up time was 39.7 +/-12.5 months. Postoperative evaluation including ultrasound, computed tomography and serology tests showed no local recurrence or spread of the disease. The mean reduction in volume was 87.0% after 1 year. Only 6 cysts recurred after 6 month to 2 years and were treated again by PAIR. Major complications were infection of the cyst cavity in 1 patient and development of biliary fistula in 3 patients. In all other cases detachment of the germinal membrane and complete transformation of the cyst were observed after 1 month to 2 years. Minor complications were urticaria and fever in 6 patients. Mean hospitalization was 3.6 days. The long-term results of percutaneous liver hydatid cyst treatment indicate that the procedure is efficient and safe and offers complete cure in selected patients, with short hospitalization. Scopul acestui studiu este de a prezenta rezultatele tratamentului chistelor hidatice abdominale prin punc]ie percutanat\ ghidat\ echografic. În perioada aprilie 1996 -aprilie 2002, 118 pacien]i (cu 135 chisturi hidatice hepatice), cu o vârst\ medie de 40,6 ani, au fost trata]i prin punc]ie, aspira]ie, injectare, reaspira]ie. Ca agent citotoxic [i sclerozant a fost folosit alcoolul pur. Ghidarea echografic\ a fost utilizat\ în toate cazurile. To]i pacien]ii au fost trata]i cu medicamente antihelmintice cu 24 de ore înainte [i cel pu]in o lun\ dup\ punc]ie. To]i pacien]ii au fost trata]i cu succes, timpul mediu de urm\rire fiind de 39,7 +/-12,5 luni. Evaluarea postoperatorie (echografie, tomografie computerizat\, teste serologice) a demonstrat absen]a recidivelor sau a disemin\rii. Doar 6 chiste au necesitat reinterven]ie. Complica]iile majore au fost infec]ia cavit\]ii chistice (1 caz) [i fistula biliar\ (3 cazuri). În toate celelalte cazuri deta[area membranei proligere [i transformarea complet\ a chistului au fost observate între o lun\ [i 2 ani. Complica]iile minore au fost reprezentate de urticarie [i febr\ (6 pacien]i). Durata medie a spitaliz\rii a fost de 3,6 zile. Rezultatele pe termen lung indic\ faptul c\ procedura este sigur\ [i eficient\, oferind vindecarea complet\ la pacien]ii selecta]i, cu durat\ scurt\ de spitalizare.
Journal of Vascular and Interventional Radiology, 1996
European Journal of Radiology, 2002
Abdominal US and CT scans of 50 pediatric cystic fibrosis (CF) patients were evaluated to search ... more Abdominal US and CT scans of 50 pediatric cystic fibrosis (CF) patients were evaluated to search for specific data that can be attributed to the involvement of the hepatobiliary system. The liver findings of the two patients who were HBs antigen carriers were excluded from the study. Results: 30 out of 48 patients had at least one abnormal finding of liver on CT and/or US. Although increased echogenicity of the liver was detected in 24 of 48 patients (50%), only six of these (12%) were regarded as steatosis according to CT criteria of low attenuation values. CT and US scans both showed unique multilobular fatty pattern, described as 'pseudomasses' in three patients. Increased periportal echogenicity was seen in 18 (37%) patients on US, while CT could not demonstrate any sign of increased periportal thickness. Findings of cirrhosis were present in five patients with either modalities. Lymph nodes of less than 10-15 mm in diameter were detected at the hepatico-duodenal ligament in 18 (37%) patients. Anomalies of the gallbladder (absence or microgallbladder or stone) were detected in 12 cases (24%). Conclusion: Although US is the most widely used modality in CF patients, CT and US correlation will help to better delineate the abnormalities between steatosis and periportal fibrosis and increase the sensitivity of the imaging methods to achieve the most accurate diagnosis.
American Journal of Ophthalmology, 1998
PURPOSE: To describe the percutaneous treatment of an orbital hydatid cyst as an alternative appr... more PURPOSE: To describe the percutaneous treatment of an orbital hydatid cyst as an alternative approach to conventional surgery. METHODS: In a 21-year-old man with diplopia and right proptosis, radiologic studies disclosed a 25 ؋ 25 ؋ 20-mm purely cystic mass in the right retrobulbar area. Based on the presumptive diagnosis of hydatid cyst, the cyst was treated percutaneously under ultrasonographic guidance with aspiration, 15% hypertonic saline injection, and reaspiration without any complication. RESULTS: A substantial decrease in the size of the cyst was observed in the 3 months after treatment. Nine months after treatment, the shrunken cyst had a volume of only 0.5 ml, and the patient was asymptomatic. Twenty-one months after the procedure, the findings were consistent with those at 9 months of follow-up. CONCLUSION: Percutaneous treatment of orbital hydatid cysts, which is more satisfactory to both the patient and the physician, may be a safe and effective alternative to surgical extirpation. (Am J Ophthalmol 1998;125:877-879.
European Journal of Radiology, 2002
Percutaneous cholecystostomy (PC), a technique that consists of percutaneous catheter placement i... more Percutaneous cholecystostomy (PC), a technique that consists of percutaneous catheter placement in the gallbladder lumen under imaging guidance, has become an alternative to surgical cholecystostomy in recent years. Indications of PC include calculous or acalculous cholecystitis, cholangitis, biliary obstruction and opacification of biliary ducts. It also provides a potential route for stone dissolution therapy and stone extraction. Under aseptic conditions and ultrasound guidance, using local anesthesia, the procedure is carried out by using either modified Seldinger technique or trocar technique. Transhepatic or transperitoneal puncture can be performed as an access route. Several days after the procedure transcatheter cholangiography is performed to assess the patency of cystic duct, presence of gallstones and catheter position. The tract is considered mature in the absence of leakage to the peritoneal cavity, subhepatic, subcapsular, or subdiaphragmatic spaces. Response rates to PC in the literature are between the range of 56-100% as the variation of different patient population. Complications associated with PC usually occur immediately or within days and include haemorrhage, vagal reactions, sepsis, bile peritonitis, pneumothorax, perforation of the intestinal loop, secondary infection or colonisation of the gallbladder and catheter dislodgment. Late complications have been reported as catheter dislodgment and recurrent cholecystitis. PC under ultrasonographic guidance is a cost-effective, easy to perform and reliable procedure with low complication and high success rates for critically ill patients with acute cholecystitis. It is generally followed by elective cholecystectomy, if possible. However, it may be definitive treatment, especially in acalculous cholecystitis.
Journal of Clinical Ultrasound, 1992
Twenty patients with tuberculous pleural effusions were studied with ultrasonography. In 18 patie... more Twenty patients with tuberculous pleural effusions were studied with ultrasonography. In 18 patients, ultrasonography demonstrated regular pleural thickening which was less than 1 cm except in 1 case. In 4 cases there were a few pleural nodules, whereas in 2 cases the pleural surface showed small nodularity. The latter finding may be diagnostic for a tuberculous etiology. Eighteen patients had multiple, delicate, mobile septations in the effusions, and a lattice-like appearance had formed in 6 cases. Computed tomography was obtained in 7 cases, and pleural thickening was demonstrated in 6 of them. Ultrasonography is a useful imaging modality in the diagnosis of tuberculous pleurisy.
European Journal of Radiology, 2002
Objective: The clinical spectrum of childhood non-Hodgkin's lymphoma (NHL) is different from that... more Objective: The clinical spectrum of childhood non-Hodgkin's lymphoma (NHL) is different from that in adults, with frequent extranodal involvement. We searched the incidence and radiological appearance of the secondary involvement of the thyroid and salivary glands by ultrasonography (US) to assess its importance for staging of the disease. Materials and methods: We examined the thyroid, parotid and submandibulary glands of 43 children with NHL, age ranging between 9 months and 17 years, by US. Results: According to US findings, involvement of the parotid gland was very common as detected in 18 of the cases with NHL (41%). It was the most common organ involved in lymphoma. Lymphomatous infiltration of the thyroid gland, with bilateral multiple focal lesions, was detected in two patients and proved by fine needle aspiration biopsy in all cases (5%). Salivary gland and thyroid involvement changed staging in three (6%) of the patients, however, the treatment plan was unchanged. Conclusions: This study shows that anatomic sites, known to be very rarely involved at the initial presentation of the disease is actually more commonly involved in childhood NHL. However, it does not cause any significant change in the treatment planning or in the survival. #
Chronic pancreatitis is one of the indications for pancreatic duct stenting. The success rate of ... more Chronic pancreatitis is one of the indications for pancreatic duct stenting. The success rate of endoscopic stenting of the pancreatic duct is very high (98%). Reports of percutaneous stenting of the Wirsung's duct are very sparse. We present a case with Wirsung's duct stenosis secondary to chronic pancreatitis, which was treated by percutaneous antegrade balloon dilatation and insertion of a plastic stent. We also report on the long-term followup of this patient.
Cardiovascular and Interventional Radiology, 1992
Although percutaneous procedures have been used for the treatment of lymphoceles, transcatheter s... more Although percutaneous procedures have been used for the treatment of lymphoceles, transcatheter sclerosing therapy has not been widely applied. We present the results of transcatheter sclerotherapy of lymphoceles with 96% absolute ethanol in 7 patients who had developed lymphocele after pelvic lymphadenectomy for uterine cancer. Seven of the eight lymphoceles (88%) completely disappeared after treatment. The duration of catheter drainage ranged from 4 to 21 days. Although one lymphocele did not resolve completely, it did not require surgery as the patient’s symptoms resolved.
Bu makale Diagnostic and Interventional Radiology'de yer alan İngilizce makalenin Türkçesi olup k... more Bu makale Diagnostic and Interventional Radiology'de yer alan İngilizce makalenin Türkçesi olup kaynak gösterme ve dizinleme amacı ile kullanılamaz.
Pediatric Radiology, 1997
We report a case of bilateral multilocular cystic adrenal masses in a neonate who demonstrated so... more We report a case of bilateral multilocular cystic adrenal masses in a neonate who demonstrated somatic hypertrophy and macroglossia, which are considered to constitute an incomplete form of Beckwith-Wiedemann syndrome (BWS). After surgical removal of the masses, histological study revealed benign hemorrhagic macrocysts with cortical cytomegaly. There was no evidence of tumor or adrenal apoplexia. Although very rare, association of unilateral hemorrhagic adrenal macrocysts with BWS has been reported before; this is the first case of bilateral benign adrenal macrocysts associated with BWS.
Iktisat Isletme Ve Finans, 2000
In this study, we try to test the econometric implications of real business cycle models using re... more In this study, we try to test the econometric implications of real business cycle models using recently developed techniques on cointegration and seasonal integration. The emprical findings of the study does not support the hypothesis that consumption, investment and ...
Iktisat Isletme Ve Finans, 2009
Policymakers are interested in the general trend of inflation. Headline inflation is subject to d... more Policymakers are interested in the general trend of inflation. Headline inflation is subject to different shocks and contains noise due to the heterogeneity inherit in it. Therefore, core inflation measures, which are better capable of indicating general trend, are developed. Atuk and Özmen (2009) introduced and discussed various core inflation measures for Turkey. Among various measures discussed, trimmed mean inflation
The abstract should be clear, descriptive and no longer than 250 words. It should provide a brief... more The abstract should be clear, descriptive and no longer than 250 words. It should provide a brief introduction to the main theme. This should generally be followed by a statement regarding the methodology, a brief summary of results. The abstract should end with a comment on the significance of the results or a brief conclusion. Abstracts are written in 8pt Times italic. In MSWord set paragraph format of abstract to indentation left and right each of 1.5 cm.
European Journal of Radiology, 1999
Inflammatory lesions constitute an important subgroup of focal liver lesions. They may mimic prim... more Inflammatory lesions constitute an important subgroup of focal liver lesions. They may mimic primary or metastatic neoplastic lesions and their differentiation from neoplasia is clinically very important since management of the patient significantly changes. Radiologists should have an important role in both the diagnosis and therapy of these lesions by performing percutaneous aspirations and drainages. In this review we discussed the radiological findings of pyogenic abscesses, amebic abscesses, candidiasis, tuberculosis, hydatic cysts, fascioliasis, ascariasis, schistosomiasis, and sarcoidosis with a special emphasis on US, CT and MR characteristics
European Journal of Radiology, 2009
Purpose: We aimed to describe computed tomography (CT) findings in patients with peritoneal, omen... more Purpose: We aimed to describe computed tomography (CT) findings in patients with peritoneal, omental and mesenteric lymphoma involvement. Materials and methods: We searched our archive retrospectively to find out patients with peritoneal, omental and mesenteric lymphoma involvement. We found 16 patients with non-hodgkin lymphoma meeting these criteria. CT studies of these patients were reevaluated for the presence of peritoneal involvement, ascites, omental mass, organomegaly, retroperitoneal lymphadenopathy, bowel wall thickening and other associated findings. Results: There were 14 males and 2 females with peritoneal and/or mesenteric and omental lymphoma involvement. Mean age was 39 (range 4-76). Subgroups of non-hodgkin lymphoma were diffuse large B-cell lymphoma (n = 11), small cell lymphocytic lymphoma (n = 2), small cleaved cell lymphoma (n = 1), T-cell lymphoma (n = 1) and Burkitt's lymphoma (n = 1). Peritoneal involvement was seen in 15 patients (93.8%) in the form of linear (n = 12) and nodular (n = 3) thickening. Ascites was seen in 12 (75%) patients. Omental and mesenteric masses were present in 10 (66.6%) and 10 (66.6%) patients, respectively. Bowel wall thickening, retroperitoneal lymphadenopathy and hepatosplenomegaly were also common and observed in 10, 10 and 11 patients, respectively. Solid organ involvement in the form of liver and splenic lesions was seen in 9 (56%) patients. Conclusion: Peritoneal involvement can be seen in many subtypes of lymphoma and most frequently in diffuse large B-cell lymphoma. Peritoneal lymphomatosis can mimic peritoneal carcinomatosis and should be included in the differential diagnosis list in patients with ascites, hepatosplenic lesions and unidentified cause of peritoneal thickening on CT in a male patient.
European Radiology, 2002
Although the most involved organs are liver and lung, hydatid cysts are very rarely seen in the h... more Although the most involved organs are liver and lung, hydatid cysts are very rarely seen in the head and neck region. Only a few cases with hydatid cyst in parotid gland have been reported in the literature. We present the findings of 18 months of follow-up of a case with a hydatid cyst in parotid gland treated percutaneously by using PAIR technique. To our knowledge, this is the first case of parotid gland hydatid cyst who underwent percutaneous treatment. Percutaneous treatment of parotid hydatid cyst seems to be a safe and effective procedure as a possible alternative to surgery.
European Radiology, 2005
The objective of this study was to evaluate the efficacy of transvaginal contrast for local stagi... more The objective of this study was to evaluate the efficacy of transvaginal contrast for local staging of cervical carcinoma. Fifty patients diagnosed with cervical carcinoma prospectively underwent magnetic resonance (MR) imaging before and after vaginal opacification (VO) with a mixture of 25 ml saline and 25 ml barium. T2-weighted (T2W) TSE images in axial and sagittal planes were compared before and after vaginal opacification. Dynamic T1W images in sagittal and fat-suppressed T1W images in transverse planes were also evaluated after intravenous contrast administration. Involvement of vaginal wall, lumen, and fornices; parametrium; rectum; and bladder were noted. Changes in local tumor staging and in treatment planning were also assessed after vaginal opacification. MR results were later compared with surgical pathological findings. Twenty-eight patients who went through surgical staging were included in the study. VO did not change any of the MR interpretations in 14 patients (50%). Correct staging was achieved with T2W TSE images with and without VO (in sagittal and transverse planes) in 78.5% and 50% of the patients, respectively. VO correctly lowered staging in seven and increased it in three patients compared with sagittal standard T2W images. Treatment planning was also changed in four (14%) of these patients. When overall accuracy of MR staging to indicate the appropriate treatment was evaluated, patients would have received the proper treatment in 90% and 79% of the cases when only T2W sagittal images with and without VO were evaluated, respectively. Dynamic gradient-echo images in sagittal planes and postcontrast T1W images in transverse planes evaluated with T2W series after VO, accomplished correct staging in 23 (82%) of the patients. MRI staging in early cervical cancer may be difficult and overestimated, especially if the tumor is slightly extended into the proximal vagina. Use of vaginal contrast medium is an easy, well-tolerated, and effective method to better delineate the borders of the tumor. It increases the specificity and accuracy of MR staging by showing the exact relation of the tumor with the vaginal wall and beyond.
Cardiovascular and Interventional Radiology, 1994
Purpose To evaluate the safety and efficacy of percutaneous drainage of pulmonary hydatid cysts. ... more Purpose To evaluate the safety and efficacy of percutaneous drainage of pulmonary hydatid cysts. Methods Eleven pulmonary hydatid cysts in eight patients were drained percutaneously after 1–2 years of treatment with mebendazole (50 mg/kg/day). Percutaneous needle aspiration was carried out under ultra-sound (US) in six patients and computed tomography (CT) in two patients. Nine cysts were close to, and two cysts were distant from the thoracic wall. After aspiration, hypertonic (15%) saline solution was instilled for up to 35% of the estimated volume of the cyst and aspirated 5–10 min later. Follow-up ranged from 8 to 31 months (mean 16.3 months). Results Neither anaphylactic shock nor death occurred in any of the eight patients. One patient developed fever, ipsilateral hydropneumothorax, and contralateral pleural effusion. One patient suffered from fever, pneumothorax, and abscess and was treated surgically; one developed fever and dyspnea. The volume reduction during follow-up was 47%–93%. The cystic contents turned into a pseudotumor appearance with a thick irregular contour on CT and higher Hounsfield units. On US, the cysts showed a heterogeneous content with internal echoes representing detached and degenerated membranes, and the fluid content almost completely disappeared. Conclusion We believe that percutaneous therapy of pulmonary hydatid disease is an effective alternative to surgical treatment in patients who have failed medical therapy.
European Radiology, 2002
We present unusual imaging findings in the liver of a patient with Wilson's disease . On US, the ... more We present unusual imaging findings in the liver of a patient with Wilson's disease . On US, the liver contours were irregular and its echogenicity was increased with multiple, small hypo- and hyperechoic nodules. Prominent perihepatic fat layer was noted to be increased in thickness. On CT and MR, multiple, small, enhancing nodules were detected in the liver in the early arterial phase after administration of intravenous contrast material. Biopsy was consistent with chronic parenchymal liver pathology with dysplastic changes but without evidence of hepatocellular carcinoma. To our knowledge, dysplastic nodules enhancing at the arterial phase and thickened perihepatic fat layer have not been previously reported in patients with Wilson's disease.
European Journal of Radiology, 1999
The purpose of the study was to present our experience with ultrasound (US)-guided percutaneous t... more The purpose of the study was to present our experience with ultrasound (US)-guided percutaneous treatment of hydatid abdominal cysts. From April 1996 to April 2002, 118 patients with 135 liver hydatid cysts (49 men and 69 women), with a mean age of 40.6 years (range 7 -68 yr.) were treated with PAIR (puncture, aspiration, injection, re-aspiration) technique. Absolute alcohol was used as the cytotoxic and sclerosing agent. Sonographic guidance was used in all patients. The patients were selected from CL, CE1 CE2 after WHO-IWGE classification. All patients were treated with antihelmintic drugs started with 24 hours before puncture and for at least one month after the procedure. All the patients were successfully treated and the mean follow-up time was 39.7 +/-12.5 months. Postoperative evaluation including ultrasound, computed tomography and serology tests showed no local recurrence or spread of the disease. The mean reduction in volume was 87.0% after 1 year. Only 6 cysts recurred after 6 month to 2 years and were treated again by PAIR. Major complications were infection of the cyst cavity in 1 patient and development of biliary fistula in 3 patients. In all other cases detachment of the germinal membrane and complete transformation of the cyst were observed after 1 month to 2 years. Minor complications were urticaria and fever in 6 patients. Mean hospitalization was 3.6 days. The long-term results of percutaneous liver hydatid cyst treatment indicate that the procedure is efficient and safe and offers complete cure in selected patients, with short hospitalization. Scopul acestui studiu este de a prezenta rezultatele tratamentului chistelor hidatice abdominale prin punc]ie percutanat\ ghidat\ echografic. În perioada aprilie 1996 -aprilie 2002, 118 pacien]i (cu 135 chisturi hidatice hepatice), cu o vârst\ medie de 40,6 ani, au fost trata]i prin punc]ie, aspira]ie, injectare, reaspira]ie. Ca agent citotoxic [i sclerozant a fost folosit alcoolul pur. Ghidarea echografic\ a fost utilizat\ în toate cazurile. To]i pacien]ii au fost trata]i cu medicamente antihelmintice cu 24 de ore înainte [i cel pu]in o lun\ dup\ punc]ie. To]i pacien]ii au fost trata]i cu succes, timpul mediu de urm\rire fiind de 39,7 +/-12,5 luni. Evaluarea postoperatorie (echografie, tomografie computerizat\, teste serologice) a demonstrat absen]a recidivelor sau a disemin\rii. Doar 6 chiste au necesitat reinterven]ie. Complica]iile majore au fost infec]ia cavit\]ii chistice (1 caz) [i fistula biliar\ (3 cazuri). În toate celelalte cazuri deta[area membranei proligere [i transformarea complet\ a chistului au fost observate între o lun\ [i 2 ani. Complica]iile minore au fost reprezentate de urticarie [i febr\ (6 pacien]i). Durata medie a spitaliz\rii a fost de 3,6 zile. Rezultatele pe termen lung indic\ faptul c\ procedura este sigur\ [i eficient\, oferind vindecarea complet\ la pacien]ii selecta]i, cu durat\ scurt\ de spitalizare.
Journal of Vascular and Interventional Radiology, 1996
European Journal of Radiology, 2002
Abdominal US and CT scans of 50 pediatric cystic fibrosis (CF) patients were evaluated to search ... more Abdominal US and CT scans of 50 pediatric cystic fibrosis (CF) patients were evaluated to search for specific data that can be attributed to the involvement of the hepatobiliary system. The liver findings of the two patients who were HBs antigen carriers were excluded from the study. Results: 30 out of 48 patients had at least one abnormal finding of liver on CT and/or US. Although increased echogenicity of the liver was detected in 24 of 48 patients (50%), only six of these (12%) were regarded as steatosis according to CT criteria of low attenuation values. CT and US scans both showed unique multilobular fatty pattern, described as 'pseudomasses' in three patients. Increased periportal echogenicity was seen in 18 (37%) patients on US, while CT could not demonstrate any sign of increased periportal thickness. Findings of cirrhosis were present in five patients with either modalities. Lymph nodes of less than 10-15 mm in diameter were detected at the hepatico-duodenal ligament in 18 (37%) patients. Anomalies of the gallbladder (absence or microgallbladder or stone) were detected in 12 cases (24%). Conclusion: Although US is the most widely used modality in CF patients, CT and US correlation will help to better delineate the abnormalities between steatosis and periportal fibrosis and increase the sensitivity of the imaging methods to achieve the most accurate diagnosis.
American Journal of Ophthalmology, 1998
PURPOSE: To describe the percutaneous treatment of an orbital hydatid cyst as an alternative appr... more PURPOSE: To describe the percutaneous treatment of an orbital hydatid cyst as an alternative approach to conventional surgery. METHODS: In a 21-year-old man with diplopia and right proptosis, radiologic studies disclosed a 25 ؋ 25 ؋ 20-mm purely cystic mass in the right retrobulbar area. Based on the presumptive diagnosis of hydatid cyst, the cyst was treated percutaneously under ultrasonographic guidance with aspiration, 15% hypertonic saline injection, and reaspiration without any complication. RESULTS: A substantial decrease in the size of the cyst was observed in the 3 months after treatment. Nine months after treatment, the shrunken cyst had a volume of only 0.5 ml, and the patient was asymptomatic. Twenty-one months after the procedure, the findings were consistent with those at 9 months of follow-up. CONCLUSION: Percutaneous treatment of orbital hydatid cysts, which is more satisfactory to both the patient and the physician, may be a safe and effective alternative to surgical extirpation. (Am J Ophthalmol 1998;125:877-879.
European Journal of Radiology, 2002
Percutaneous cholecystostomy (PC), a technique that consists of percutaneous catheter placement i... more Percutaneous cholecystostomy (PC), a technique that consists of percutaneous catheter placement in the gallbladder lumen under imaging guidance, has become an alternative to surgical cholecystostomy in recent years. Indications of PC include calculous or acalculous cholecystitis, cholangitis, biliary obstruction and opacification of biliary ducts. It also provides a potential route for stone dissolution therapy and stone extraction. Under aseptic conditions and ultrasound guidance, using local anesthesia, the procedure is carried out by using either modified Seldinger technique or trocar technique. Transhepatic or transperitoneal puncture can be performed as an access route. Several days after the procedure transcatheter cholangiography is performed to assess the patency of cystic duct, presence of gallstones and catheter position. The tract is considered mature in the absence of leakage to the peritoneal cavity, subhepatic, subcapsular, or subdiaphragmatic spaces. Response rates to PC in the literature are between the range of 56-100% as the variation of different patient population. Complications associated with PC usually occur immediately or within days and include haemorrhage, vagal reactions, sepsis, bile peritonitis, pneumothorax, perforation of the intestinal loop, secondary infection or colonisation of the gallbladder and catheter dislodgment. Late complications have been reported as catheter dislodgment and recurrent cholecystitis. PC under ultrasonographic guidance is a cost-effective, easy to perform and reliable procedure with low complication and high success rates for critically ill patients with acute cholecystitis. It is generally followed by elective cholecystectomy, if possible. However, it may be definitive treatment, especially in acalculous cholecystitis.
Journal of Clinical Ultrasound, 1992
Twenty patients with tuberculous pleural effusions were studied with ultrasonography. In 18 patie... more Twenty patients with tuberculous pleural effusions were studied with ultrasonography. In 18 patients, ultrasonography demonstrated regular pleural thickening which was less than 1 cm except in 1 case. In 4 cases there were a few pleural nodules, whereas in 2 cases the pleural surface showed small nodularity. The latter finding may be diagnostic for a tuberculous etiology. Eighteen patients had multiple, delicate, mobile septations in the effusions, and a lattice-like appearance had formed in 6 cases. Computed tomography was obtained in 7 cases, and pleural thickening was demonstrated in 6 of them. Ultrasonography is a useful imaging modality in the diagnosis of tuberculous pleurisy.
European Journal of Radiology, 2002
Objective: The clinical spectrum of childhood non-Hodgkin's lymphoma (NHL) is different from that... more Objective: The clinical spectrum of childhood non-Hodgkin's lymphoma (NHL) is different from that in adults, with frequent extranodal involvement. We searched the incidence and radiological appearance of the secondary involvement of the thyroid and salivary glands by ultrasonography (US) to assess its importance for staging of the disease. Materials and methods: We examined the thyroid, parotid and submandibulary glands of 43 children with NHL, age ranging between 9 months and 17 years, by US. Results: According to US findings, involvement of the parotid gland was very common as detected in 18 of the cases with NHL (41%). It was the most common organ involved in lymphoma. Lymphomatous infiltration of the thyroid gland, with bilateral multiple focal lesions, was detected in two patients and proved by fine needle aspiration biopsy in all cases (5%). Salivary gland and thyroid involvement changed staging in three (6%) of the patients, however, the treatment plan was unchanged. Conclusions: This study shows that anatomic sites, known to be very rarely involved at the initial presentation of the disease is actually more commonly involved in childhood NHL. However, it does not cause any significant change in the treatment planning or in the survival. #
Chronic pancreatitis is one of the indications for pancreatic duct stenting. The success rate of ... more Chronic pancreatitis is one of the indications for pancreatic duct stenting. The success rate of endoscopic stenting of the pancreatic duct is very high (98%). Reports of percutaneous stenting of the Wirsung's duct are very sparse. We present a case with Wirsung's duct stenosis secondary to chronic pancreatitis, which was treated by percutaneous antegrade balloon dilatation and insertion of a plastic stent. We also report on the long-term followup of this patient.
Cardiovascular and Interventional Radiology, 1992
Although percutaneous procedures have been used for the treatment of lymphoceles, transcatheter s... more Although percutaneous procedures have been used for the treatment of lymphoceles, transcatheter sclerosing therapy has not been widely applied. We present the results of transcatheter sclerotherapy of lymphoceles with 96% absolute ethanol in 7 patients who had developed lymphocele after pelvic lymphadenectomy for uterine cancer. Seven of the eight lymphoceles (88%) completely disappeared after treatment. The duration of catheter drainage ranged from 4 to 21 days. Although one lymphocele did not resolve completely, it did not require surgery as the patient’s symptoms resolved.
Bu makale Diagnostic and Interventional Radiology'de yer alan İngilizce makalenin Türkçesi olup k... more Bu makale Diagnostic and Interventional Radiology'de yer alan İngilizce makalenin Türkçesi olup kaynak gösterme ve dizinleme amacı ile kullanılamaz.
Pediatric Radiology, 1997
We report a case of bilateral multilocular cystic adrenal masses in a neonate who demonstrated so... more We report a case of bilateral multilocular cystic adrenal masses in a neonate who demonstrated somatic hypertrophy and macroglossia, which are considered to constitute an incomplete form of Beckwith-Wiedemann syndrome (BWS). After surgical removal of the masses, histological study revealed benign hemorrhagic macrocysts with cortical cytomegaly. There was no evidence of tumor or adrenal apoplexia. Although very rare, association of unilateral hemorrhagic adrenal macrocysts with BWS has been reported before; this is the first case of bilateral benign adrenal macrocysts associated with BWS.