Meltem Duce | Mersin University (original) (raw)
Papers by Meltem Duce
PURPOSE/AIM The purpose of this exhibit is To review intracranial cysts excluding neoplasm and ab... more PURPOSE/AIM The purpose of this exhibit is To review intracranial cysts excluding neoplasm and abscess. To discuss imaging features and diagnostic approach. CONTENT ORGANIZATION We review and discuss the following intracranial nonneoplastic cysts. Normal and/or variant: enlarging perivascular (Virchow-Robin) spaces, choroid plexus cyst (xanthogranuloma), neuroglial cyst, ependymal cyst, pineal cyst Congenital inclusion cysts: arachnoid cyst, epidermoid cyst Cysts derived from embryogenic endo-or ectoderm: colloid cyst, neuroenteric cyst, rathke cleft cyst Traumatic and/or vascular cysts: porencephalic cyst Infectious cysts: hydatid cyst SUMMARY Intracranial nonneoplastic cysts are common findings in daily practice of neuroimaging with a broad spectrum of differential diagnosis. Location is the main guiding feature for the diagnosis. CT density, MR signal intensity, advanced MR sequences such as diffusion weighted imaging and gradient sequences may also provide diagnostic information...
Annals of Otology, Rhinology & Laryngology, 2002
Pneumatization of the middle turbinate and, less commonly, of the superior turbinate is known as ... more Pneumatization of the middle turbinate and, less commonly, of the superior turbinate is known as concha bullosa.' Inferior concha bullosa (ICB) is an aircontaining structure in the body of the inferior turbinate that may communicate with the maxillary sinus. Although concha bullosa of the middle turbinate is very common, ICB is extremely rare.? In the English-language literature, there are 3 reported unilateral ICBs and I bilateral ICB.2-4Herein, we present a case of bilateral ICB associated with unilateral concha bullosa of the middle turbinate, septal pneumatization, and unilateral overpneumatized ethmoidal bulla.
Clinical Radiology Extra, 2002
International Journal of Surgery, 2008
'Radio-guided occult lesion localization' is a new technique in the breast conservative surgery p... more 'Radio-guided occult lesion localization' is a new technique in the breast conservative surgery performed for the localization and resection of non-palpable breast lesions. The purpose of this study is to evaluate the results of this breast surgical procedure provided by several published papers.
European Journal of Radiology, 2005
The purpose of our study was to describe the pulmonary parenchymal changes of Behçet's disease us... more The purpose of our study was to describe the pulmonary parenchymal changes of Behçet's disease using high-resolution computed tomography and to correlate them with pulmonary function tests. Materials and methods: Thirty-four patients with Behçet's disease (18 men, 16 women), 3 of whom were symptomatic, were included as the study group. Four of 34 patients were smokers. Twenty asymptomatic volunteers (12 men, 8 women), 4 of whom were smokers, constituted the control group. The pulmonary function tests and high-resolution computed tomography were performed for both groups. Results: Inspiratory high-resolution computed tomography findings were abnormal in nine patients (26.5%) of the study group. In eight patients, there were multiple abnormalities, whereas one patient had only one abnormality. Pleural thickening and irregularities, major fissure thickening, emphysematous changes, bronchiectasis, parenchymal bands, and irregular densities, and parenchymal nodules were the encountered abnormalities. Inspiratory high-resolution computed tomography scans were normal in the control group. On expiratory scans, there was statistically significant difference between study group and control group when air trapping, especially grades 3 and 4, was compared (P < 0.01). Pulmonary function tests of both the study and the control groups were in normal ranges, and there was no statistically significant difference between the two groups according to pulmonary function tests (P > 0.05). Discussion and conclusion: High-resolution computed tomography is sensitive in the demonstration of pulmonary changes in patients with Behçet's disease. End-expiratory high-resolution computed tomography examination is very useful and necessary to show the presence of air trapping, thus the presence of small airway disease, even if the patient is asymptomatic or has normal pulmonary function tests.
European Archives of Oto-Rhino-Laryngology, 2004
Choanal polyps usually originate from the maxillary sinus. Unusual origins such as the sphenoid s... more Choanal polyps usually originate from the maxillary sinus. Unusual origins such as the sphenoid sinus, ethmoid sinus, nasal septum and hard and soft palate have been reported in the literature. Herein, we report a rare case of choanal polyp originating from the middle turbinate that was removed by an endoscopic surgery technique. The computed tomographic findings are described and the literature is reviewed.
Urology, Jan 8, 2004
Objectives. To evaluate the diagnostic value of the renal parenchymal density difference, detecte... more Objectives. To evaluate the diagnostic value of the renal parenchymal density difference, detected using unenhanced helical computed tomography, as a secondary sign of acute obstruction due to a ureteral stone. Methods. Fifty-five patients with acute flank pain, in whom a ureteral stone was detected on the symptomatic side using unenhanced helical computed tomography, and 22 control subjects with no urinary stone disease were included in this prospective study. Computed tomography was performed, starting from the upper poles of the kidneys down to the base of the urinary bladder. The renal parenchymal density was measured in the upper, middle, and lower portions of each kidney, and a mean value was calculated. The difference between the mean values of the two kidneys was used to predict the presence of an acutely obstructing ureteral stone. Results. In 49 patients with a ureteral stone (89.1%), the difference between the parenchymal densities of the obstructed and nonobstructed kidneys was 5 Hounsfield units (HU) or greater and was lower on the obstructed side. In the remaining 6 patients (10.9%), the density difference was less than 5 HU but was still lower on the obstructed side. All subjects in the control group had a density difference of less than 5 HU. A renal parenchymal density difference of 5.0 HU or greater had 89.1% sensitivity, 100% specificity, 100% positive predictive value, 85.7% negative predictive value, and 93.4% accuracy in predicting the presence of an acute obstructing ureteral stone. Conclusions. These data suggest that the renal parenchymal density difference may be a valuable secondary sign of acute obstructing ureteral stone disease.
Clinical Imaging, 2003
The reliabilities of the delayed images of helical computed tomography (CT) in detecting renal ma... more The reliabilities of the delayed images of helical computed tomography (CT) in detecting renal mass lesions of 30 mm or less in diameter was compared. Nephrographic, excretory and nephrographic + excretory phase images of all patients were evaluated separately to detect mass lesions of 5 and 5-30 mm. There was not any statistically significant difference in the results of three groups. Nephrographic, excretory and nephrographic + excretory phase images are not different from or superior to each other in lesion detection.
PURPOSE/AIM The purpose of this exhibit is To review typical and atypical midline masses of the h... more PURPOSE/AIM The purpose of this exhibit is To review typical and atypical midline masses of the head and neck excluding intracranial lesions. To discuss clinical and imaging features which allow differential diagnosis. CONTENT ORGANIZATION We reviewed midline masses of the head and neck and categorized them according to their location. Head: cephaloceles, dermoid, sinus pericranii, hemangioma, lipom Nasal/nasofrontal: dermoid, nasal glioma, nasal septal abcess Maxilla: nasopalatine ductus cyst Nasopharynx: adenoid hypertrophy, nasopharynx carcinoma, lymphoma, thornwaldt cyst, antrochonal polip Tongue/oropharynx: dermoid, lingual tyroid Hypopharynx: epidermoid carcinoma Retropharynx: abcess Anterior neck: thyroglossal ductus cyst, cervical tymic cyst, delphian node Skull base: chordoma SUMMARY Radiological findings along with the patient’s age and clinical history are essential for the diagnosis when a mass is encountered in the head or neck. Midline location is a typical feature for...
Acta Orthopaedica Et Traumatologica Turcica, Feb 1, 2004
The informative value of axial radiographs of the patellofemoral joint is highly dependent on app... more The informative value of axial radiographs of the patellofemoral joint is highly dependent on application techniques and knee positioning. We developed a simple device that enables an appropriate and easy positioning. With the use of this device, patellofemoral axial radiographs can be obtained at 30 degrees of knee flexion.
Acta Orthopaedica Et Traumatologica Turcica, Feb 1, 2005
Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal c... more Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal column. Magnetic resonance imaging revealed a ganglion cyst at the L4-5 level in a 46-year-old woman who had a complaint of long-standing pain in her right leg. The cyst was completely excised following total laminectomy at L4. After surgery, her symptoms and neurological signs completely disappeared.
Turkiye Klinikleri Journal of Radiology Special Topics, 2008
Turkish Journal of Emergency Medicine, 2015
Using whole-body multislice computed tomography (MSCT) excessively or with irrelevant indications... more Using whole-body multislice computed tomography (MSCT) excessively or with irrelevant indications can be seen in many centers. The aim of this study was to analyze retrospectively the MSCT findings in trauma patients admitted to the emergency department. Records of the patients who have applied to the emergency department due to blunt trauma in a 12 month period and whose whole body MSCT images have been taken, were evaluated using the "Nucleus Medical Information System". The most frequent type of trauma was traffic accidents in 61.4%, falling down from the height in 22.4%, and motorcycle accidents in 11.4% of patients. Of the patients, 25.2% were discharged from the emergency, while 73.8% were hospitalized. At least one CT findings associated with trauma was present in 61.4% of our patients. Pathological findings in MSCT were most frequently detected in the head and face (35.3%) and thoracic (28.6%) regions, respectively. The most common finding in the head and face region was fractures. The most common pathological findings in the thoracic region were pulmonary contusion and rib fractures. A significant relationship was detected between trauma type and spinal MSCT result (p < 0.001). In a large percentage of the patients, MSCT findings were normal in the abdominal region and genitourinary system. Vertebral fractures were most frequently detected in the thoracolumbar region. In our study, our rate of negative CT was found to be 38.6%, which is a higher ratio compared to other studies conducte on this topic.
Acta orthopaedica et traumatologica turcica, 2005
Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal c... more Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal column. Magnetic resonance imaging revealed a ganglion cyst at the L4-5 level in a 46-year-old woman who had a complaint of long-standing pain in her right leg. The cyst was completely excised following total laminectomy at L4. After surgery, her symptoms and neurological signs completely disappeared.
Mersin Universitesi Tip Fakultesi Dergisi, Mar 22, 2012
Turkiye Klinikleri Journal of Physical Medicine Rehabilitation, 2003
International Journal of Fertility and Women S Medicine, 2002
To assess the relationship of grip strength to site-specific bone mineral density of the metacarp... more To assess the relationship of grip strength to site-specific bone mineral density of the metacarpal bone and also axial bone mineral density. The bone mineral density of the lumbar spine, femoral neck and the nondominant hand were measured by DEXA. A total of 187 postmenopausal women were included in the study. Of the patients, 102 were osteoporotic, and 85 were not osteoporotic and served as control subjects. Grip strength of the nondominant hand was measured by hand-held dynamometer. Skinfold thickness of the nondominant hand was measured by a caliper (Holstain). Biochemical markers of bone turnover and other osteoporosis-related variables were also measured. There was a statistically significant difference between groups regarding bone mineral density of the lumbar, femoral (neck) and hand regions and the grip strength (P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; .05). Hand bone mineral density (BMD) was found to be correlated with bone mineral density of the lumbar and femoral (neck) regions in osteoporotic patients. Grip strength was correlated positively with the BMD of the nondominant hand. Grip strength was correlated negatively with age and years since menopause. Grip strength was also correlated positively with femoral neck BMD. The study provides support for a site-specific and also systemic relationship between muscle and bone. Grip strength is also a predictor of hand bone mineral density.
European Journal of Radiology, Sep 1, 1994
PURPOSE/AIM The purpose of this exhibit is To review intracranial cysts excluding neoplasm and ab... more PURPOSE/AIM The purpose of this exhibit is To review intracranial cysts excluding neoplasm and abscess. To discuss imaging features and diagnostic approach. CONTENT ORGANIZATION We review and discuss the following intracranial nonneoplastic cysts. Normal and/or variant: enlarging perivascular (Virchow-Robin) spaces, choroid plexus cyst (xanthogranuloma), neuroglial cyst, ependymal cyst, pineal cyst Congenital inclusion cysts: arachnoid cyst, epidermoid cyst Cysts derived from embryogenic endo-or ectoderm: colloid cyst, neuroenteric cyst, rathke cleft cyst Traumatic and/or vascular cysts: porencephalic cyst Infectious cysts: hydatid cyst SUMMARY Intracranial nonneoplastic cysts are common findings in daily practice of neuroimaging with a broad spectrum of differential diagnosis. Location is the main guiding feature for the diagnosis. CT density, MR signal intensity, advanced MR sequences such as diffusion weighted imaging and gradient sequences may also provide diagnostic information...
Annals of Otology, Rhinology & Laryngology, 2002
Pneumatization of the middle turbinate and, less commonly, of the superior turbinate is known as ... more Pneumatization of the middle turbinate and, less commonly, of the superior turbinate is known as concha bullosa.' Inferior concha bullosa (ICB) is an aircontaining structure in the body of the inferior turbinate that may communicate with the maxillary sinus. Although concha bullosa of the middle turbinate is very common, ICB is extremely rare.? In the English-language literature, there are 3 reported unilateral ICBs and I bilateral ICB.2-4Herein, we present a case of bilateral ICB associated with unilateral concha bullosa of the middle turbinate, septal pneumatization, and unilateral overpneumatized ethmoidal bulla.
Clinical Radiology Extra, 2002
International Journal of Surgery, 2008
'Radio-guided occult lesion localization' is a new technique in the breast conservative surgery p... more 'Radio-guided occult lesion localization' is a new technique in the breast conservative surgery performed for the localization and resection of non-palpable breast lesions. The purpose of this study is to evaluate the results of this breast surgical procedure provided by several published papers.
European Journal of Radiology, 2005
The purpose of our study was to describe the pulmonary parenchymal changes of Behçet's disease us... more The purpose of our study was to describe the pulmonary parenchymal changes of Behçet's disease using high-resolution computed tomography and to correlate them with pulmonary function tests. Materials and methods: Thirty-four patients with Behçet's disease (18 men, 16 women), 3 of whom were symptomatic, were included as the study group. Four of 34 patients were smokers. Twenty asymptomatic volunteers (12 men, 8 women), 4 of whom were smokers, constituted the control group. The pulmonary function tests and high-resolution computed tomography were performed for both groups. Results: Inspiratory high-resolution computed tomography findings were abnormal in nine patients (26.5%) of the study group. In eight patients, there were multiple abnormalities, whereas one patient had only one abnormality. Pleural thickening and irregularities, major fissure thickening, emphysematous changes, bronchiectasis, parenchymal bands, and irregular densities, and parenchymal nodules were the encountered abnormalities. Inspiratory high-resolution computed tomography scans were normal in the control group. On expiratory scans, there was statistically significant difference between study group and control group when air trapping, especially grades 3 and 4, was compared (P < 0.01). Pulmonary function tests of both the study and the control groups were in normal ranges, and there was no statistically significant difference between the two groups according to pulmonary function tests (P > 0.05). Discussion and conclusion: High-resolution computed tomography is sensitive in the demonstration of pulmonary changes in patients with Behçet's disease. End-expiratory high-resolution computed tomography examination is very useful and necessary to show the presence of air trapping, thus the presence of small airway disease, even if the patient is asymptomatic or has normal pulmonary function tests.
European Archives of Oto-Rhino-Laryngology, 2004
Choanal polyps usually originate from the maxillary sinus. Unusual origins such as the sphenoid s... more Choanal polyps usually originate from the maxillary sinus. Unusual origins such as the sphenoid sinus, ethmoid sinus, nasal septum and hard and soft palate have been reported in the literature. Herein, we report a rare case of choanal polyp originating from the middle turbinate that was removed by an endoscopic surgery technique. The computed tomographic findings are described and the literature is reviewed.
Urology, Jan 8, 2004
Objectives. To evaluate the diagnostic value of the renal parenchymal density difference, detecte... more Objectives. To evaluate the diagnostic value of the renal parenchymal density difference, detected using unenhanced helical computed tomography, as a secondary sign of acute obstruction due to a ureteral stone. Methods. Fifty-five patients with acute flank pain, in whom a ureteral stone was detected on the symptomatic side using unenhanced helical computed tomography, and 22 control subjects with no urinary stone disease were included in this prospective study. Computed tomography was performed, starting from the upper poles of the kidneys down to the base of the urinary bladder. The renal parenchymal density was measured in the upper, middle, and lower portions of each kidney, and a mean value was calculated. The difference between the mean values of the two kidneys was used to predict the presence of an acutely obstructing ureteral stone. Results. In 49 patients with a ureteral stone (89.1%), the difference between the parenchymal densities of the obstructed and nonobstructed kidneys was 5 Hounsfield units (HU) or greater and was lower on the obstructed side. In the remaining 6 patients (10.9%), the density difference was less than 5 HU but was still lower on the obstructed side. All subjects in the control group had a density difference of less than 5 HU. A renal parenchymal density difference of 5.0 HU or greater had 89.1% sensitivity, 100% specificity, 100% positive predictive value, 85.7% negative predictive value, and 93.4% accuracy in predicting the presence of an acute obstructing ureteral stone. Conclusions. These data suggest that the renal parenchymal density difference may be a valuable secondary sign of acute obstructing ureteral stone disease.
Clinical Imaging, 2003
The reliabilities of the delayed images of helical computed tomography (CT) in detecting renal ma... more The reliabilities of the delayed images of helical computed tomography (CT) in detecting renal mass lesions of 30 mm or less in diameter was compared. Nephrographic, excretory and nephrographic + excretory phase images of all patients were evaluated separately to detect mass lesions of 5 and 5-30 mm. There was not any statistically significant difference in the results of three groups. Nephrographic, excretory and nephrographic + excretory phase images are not different from or superior to each other in lesion detection.
PURPOSE/AIM The purpose of this exhibit is To review typical and atypical midline masses of the h... more PURPOSE/AIM The purpose of this exhibit is To review typical and atypical midline masses of the head and neck excluding intracranial lesions. To discuss clinical and imaging features which allow differential diagnosis. CONTENT ORGANIZATION We reviewed midline masses of the head and neck and categorized them according to their location. Head: cephaloceles, dermoid, sinus pericranii, hemangioma, lipom Nasal/nasofrontal: dermoid, nasal glioma, nasal septal abcess Maxilla: nasopalatine ductus cyst Nasopharynx: adenoid hypertrophy, nasopharynx carcinoma, lymphoma, thornwaldt cyst, antrochonal polip Tongue/oropharynx: dermoid, lingual tyroid Hypopharynx: epidermoid carcinoma Retropharynx: abcess Anterior neck: thyroglossal ductus cyst, cervical tymic cyst, delphian node Skull base: chordoma SUMMARY Radiological findings along with the patient’s age and clinical history are essential for the diagnosis when a mass is encountered in the head or neck. Midline location is a typical feature for...
Acta Orthopaedica Et Traumatologica Turcica, Feb 1, 2004
The informative value of axial radiographs of the patellofemoral joint is highly dependent on app... more The informative value of axial radiographs of the patellofemoral joint is highly dependent on application techniques and knee positioning. We developed a simple device that enables an appropriate and easy positioning. With the use of this device, patellofemoral axial radiographs can be obtained at 30 degrees of knee flexion.
Acta Orthopaedica Et Traumatologica Turcica, Feb 1, 2005
Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal c... more Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal column. Magnetic resonance imaging revealed a ganglion cyst at the L4-5 level in a 46-year-old woman who had a complaint of long-standing pain in her right leg. The cyst was completely excised following total laminectomy at L4. After surgery, her symptoms and neurological signs completely disappeared.
Turkiye Klinikleri Journal of Radiology Special Topics, 2008
Turkish Journal of Emergency Medicine, 2015
Using whole-body multislice computed tomography (MSCT) excessively or with irrelevant indications... more Using whole-body multislice computed tomography (MSCT) excessively or with irrelevant indications can be seen in many centers. The aim of this study was to analyze retrospectively the MSCT findings in trauma patients admitted to the emergency department. Records of the patients who have applied to the emergency department due to blunt trauma in a 12 month period and whose whole body MSCT images have been taken, were evaluated using the "Nucleus Medical Information System". The most frequent type of trauma was traffic accidents in 61.4%, falling down from the height in 22.4%, and motorcycle accidents in 11.4% of patients. Of the patients, 25.2% were discharged from the emergency, while 73.8% were hospitalized. At least one CT findings associated with trauma was present in 61.4% of our patients. Pathological findings in MSCT were most frequently detected in the head and face (35.3%) and thoracic (28.6%) regions, respectively. The most common finding in the head and face region was fractures. The most common pathological findings in the thoracic region were pulmonary contusion and rib fractures. A significant relationship was detected between trauma type and spinal MSCT result (p < 0.001). In a large percentage of the patients, MSCT findings were normal in the abdominal region and genitourinary system. Vertebral fractures were most frequently detected in the thoracolumbar region. In our study, our rate of negative CT was found to be 38.6%, which is a higher ratio compared to other studies conducte on this topic.
Acta orthopaedica et traumatologica turcica, 2005
Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal c... more Ganglion cysts represent a rare pathology mostly encountered in the lumbar region of the spinal column. Magnetic resonance imaging revealed a ganglion cyst at the L4-5 level in a 46-year-old woman who had a complaint of long-standing pain in her right leg. The cyst was completely excised following total laminectomy at L4. After surgery, her symptoms and neurological signs completely disappeared.
Mersin Universitesi Tip Fakultesi Dergisi, Mar 22, 2012
Turkiye Klinikleri Journal of Physical Medicine Rehabilitation, 2003
International Journal of Fertility and Women S Medicine, 2002
To assess the relationship of grip strength to site-specific bone mineral density of the metacarp... more To assess the relationship of grip strength to site-specific bone mineral density of the metacarpal bone and also axial bone mineral density. The bone mineral density of the lumbar spine, femoral neck and the nondominant hand were measured by DEXA. A total of 187 postmenopausal women were included in the study. Of the patients, 102 were osteoporotic, and 85 were not osteoporotic and served as control subjects. Grip strength of the nondominant hand was measured by hand-held dynamometer. Skinfold thickness of the nondominant hand was measured by a caliper (Holstain). Biochemical markers of bone turnover and other osteoporosis-related variables were also measured. There was a statistically significant difference between groups regarding bone mineral density of the lumbar, femoral (neck) and hand regions and the grip strength (P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; .05). Hand bone mineral density (BMD) was found to be correlated with bone mineral density of the lumbar and femoral (neck) regions in osteoporotic patients. Grip strength was correlated positively with the BMD of the nondominant hand. Grip strength was correlated negatively with age and years since menopause. Grip strength was also correlated positively with femoral neck BMD. The study provides support for a site-specific and also systemic relationship between muscle and bone. Grip strength is also a predictor of hand bone mineral density.
European Journal of Radiology, Sep 1, 1994