Batuhan Demir - Academia.edu (original) (raw)

Papers by Batuhan Demir

Giriş ve Amaç: Akut nekrotizan pankreatit, akut pankreatitin en şiddetli formudur ve pankreatitin... more Giriş ve Amaç: Akut nekrotizan pankreatit, akut pankreatitin en şiddetli formudur ve pankreatitin seyri sırasında parenkim nekrozunun geliştiği pankreatit tipidir. Bu çalışmada akut nekrotizan pankreatit nedeniyle cerrahi ve konservatif tedavi uygulanan hastalar RANSON VE APACHE II skorlama sistemleri eşliğinde değerlendirilerek, morbidite ve mortaliteye etkili faktörler ve skorlama sistemlerinin tedavi yönetimindeki etkinliğini araştırmayı amaçladık. Gereç ve Yöntem: Kliniğimizde 2005-2010 yılları arasında akut nekrotizan pankreatit tanısıyla takip ve tedavi uygulanan 39 hasta retrospektif olarak değerlendirildi. Hastaların morbidite ve mortalite risk oranları RANSON ve APACHE II skorlama sistemleri ile belirlendi. Bulgular: Operasyon uygulanan 13 hastadan 4’üne eksplorasyon + nekrozektomi, 6 hastaya drenaj kateteri yerleştirilmesi, 1 hastaya nekrozektomi + sol hemikolektomi + hartmann prosedürü, 1 hastaya nekrozektomi + sağ hemikolektomi + lahey mikulicz prosedürü, 1 hastaya nekro...

PurposeMorbid obesity is a common health problem. One of the most effective methods for losing we... more PurposeMorbid obesity is a common health problem. One of the most effective methods for losing weight is surgery. There are many studies to predict weight loss after surgery and these studies generally preferred inflammatory parameters, especially C-reactive protein. We aimed to evaluate whether RDW has a predictive impact on weight loss after obesity surgery.MethodsThis was a single-institution retrospective study. The lowest weight and BMI were determined and %EBMIL and %EWL were calculated. Multiple linear regression analysis was used to determine the variables affecting the %EBMIL and %EWL values. In univariate analysis between dependent and independent variables and descriptive and clinical characteristics, variables with a p-value of <0.25 were considered as confounding factors. Surgery of patients with %EMBIL ³ 50% and %EWL ³ 25% was consideredResultsHundred and ten patients were included in the study. The %EBMIL values of patients with RDW>14.5% were 10.51 units lower ...

Adnan Menderes Üniversitesi Tıp Fakültesi/Journal Of Adnan Menderes University Medical Faculty, 2015

Objective: To evaluate the pregnancy outcomes of patients who underwent appendectomy during pregn... more Objective: To evaluate the pregnancy outcomes of patients who underwent appendectomy during pregnancy. Materials and Methods: Patients who underwent appendectomy between years 2010 and 2014 were retrospectively evaluated. All patients' pregnancy outcomes were followed-up by using university registry system and telephone interview. Patients were evaluated regarding age, gestational age, clinical and laboratory examinations, imaging studies, mean time interval between emergency department and operation, mean operative time, pregnancy outcome and pathologic results of the appendix. Results: Thirty-nine patients were included in the study. Sixteen of 39 patients were in the first, 15 of them in the second and 8 of them were in the third trimester of the pregnancy. Three patients underwent laparoscopic appendectomy and the rest underwent laparotomy. In pathologic evaluation of the appendix, seven patients (17%) had normal appendix, 4 patients had perforated appendix, one patient had neuro-endocrine tumor and rest of the patients had appendicitis. Two missed abortion occurred after operation, rest of the patients had live birth. Six of them were preterm and 31 had term birth. Twelve patients delivered through vaginal birth and the rest via caesarean section. Twenty patients were in the first half of the pregnancy (group 1) and 19 patients were in the second half of the pregnancy (group 2). There were no significant differences between the groups in operation time and mean time interval between emergency administration and operation. Conclusion: Delayed operation and negative appendectomy can cause adverse pregnancy outcomes. Expectant management in suspected cases may decrease negative appendectomy rates but can also lead to perforation. Computed tomography and MRI ought to be considered if ultrasonography is inconclusive. Tocolytic regimens can be administered to prevent threatened preterm labor. Obstetric indications were valid for delivery mode. Amaç: Gebeliğinde apendektomi yapılan hastaların gebelik sonuçlarının değerlendirilmesi. Gereç ve Yöntemler: 2010-2014 yılları arasında apendektomi yapılan hastalar retrospektif olarak incelendi. Tüm hastaların gebelik sonuçları üniversite kayıt Ad dress for Cor res pon den ce/Ya zış ma Ad re si:

American Journal of Biomedical Science & Research, 2021

Tarım Ekonomisi Dergisi, 2019

Arastirmada tuketicilerin yoresel urun satin alma davranislari ve Dogu Anadolu Bolgesi yoresel ur... more Arastirmada tuketicilerin yoresel urun satin alma davranislari ve Dogu Anadolu Bolgesi yoresel urunleri hakkindaki bilgi duzeylerinin belirlenmesi amaclanmistir. Arastirma 2016 yilinda 226 tuketiciye yari-yapilandirilmis anket uygulanarak yapilmistir. Arastirmanin sonuclarina gore tuketicilerin yaklasik %70’i yoresel urunleri satin almak istemektedir. %56 oraninda tuketici bu urunleri dogrudan yoresinden almayi tercih etmektedir. Genel olarak yoresel olmasini istedikleri urunler; peynir cesitleri, bal ve tereyagidir. Tuketiciler yoresel urunleri; dogal, lezzetli ve saglikli olarak konumlandirmaktadir. Tuketicilerin cografi isaretler konusundaki bilgi duzeyinin %5 gibi dusuk bir oranda oldugu tespit edilmistir. Tuketiciler, yoresel urunlere ortalama olarak %20 daha fazla bedel odemeye hazirdir. Yoresel urunleri tercih eden ve daha fazla bedel odemeye hazir olan kisilerin orta ve uzeri gelir duzeyindeki orta yas grubundaki evli erkek tuketiciler grubunda yogunlastigi tespit edilmistir. DAP Bolgesi urunleri icerisinde en fazla peynirler, etli yemekler ve kebaplar, meyveler ve bala ilgi gosterilmektedir. DAP Bolgesi illerinin bolge disindaki buyuk pazarlara cografi isaretler catisi altinda ozellikle peynir ve bal urunlerinden baslayarak acilmalari gerekmektedir.

Turkish Journal of Surgery, 2014

Myeloid sarcoma is a rare aggressive tumour that originates from immature extramedullary myeloid ... more Myeloid sarcoma is a rare aggressive tumour that originates from immature extramedullary myeloid cells. It can be seen as a relapse in patients with acute myeloid leukaemia. Sometimes it can be seen in the form of a solid tumour without any evidence of leukaemia. A case of a 44-year-old male patient who was admitted with symptoms and signs of mechanical intestinal bowel obstruction was operated on. The operation findings showed small bowel obstruction due to a mass. The mass was then resected with end-to-end intestinal anastomosis. The resected mass pathology results were consistent with myeloid sarcoma. The post-operative period was uneventful and adjuvant therapy was applied. In this case report we aimed to evaluate the clinical signs and treatment modalities of small intestinal myeloid sarcoma.

Turkish Journal of Surgery, 2015

In recent years, major progress has been made in the field of endocrine surgery in Turkey, simila... more In recent years, major progress has been made in the field of endocrine surgery in Turkey, similar to that in the rest of the world. Parallel to these developments, there has been a significant increase in the number of publications in the related field. Our study aimed to evaluate Turkey's publications related to endocrine surgery in the international arena. Material and Methods: Members of the general surgery departments from academic centers in Turkey were determined. Using these member names, a PubMed search was performed for English papers related to "endocrine surgery." For searching papers from non-academic centers, the same engine was used. To reach manuscripts possibly missed by the PubMed search, 3 national calls were made through the website of the Turkish Society of Endocrine Surgery. The obtained papers were divided into "thyroid," "parathyroid," "adrenal," and "neuroendocrine tumors" and were listed according to the publication year. In addition, all manuscripts were listed according to the publishing journal and the 2012 impact factor of that journal. This study did not require ethical approval, because it did not involve evaluation of experimental or patient data. Results: A search of Turkish general surgery clinics revealed 497 international publications, between 1976 and 2012. When listed according to the year of publication, most publications were found to be in the year 2009. Papers appeared mostly in "Surgery Today." The mean impact factor of the journals where the papers have been published was 1.9 (0.1-13.8). The rates of thyroid, parathyroid, adrenal tissue and neuroendocrine tumors related publications were 69%, 10%, 15% and 6%, respectively. Since this study is not an experimental study or a study related to patient data, we did not apply for ethical approval. Conclusion: The contribution of Turkish general surgeons' to world science is apparent when evaluated in terms of publications related to endocrine surgery until recently. Particularly, since 2002, with the increase in the number of publications in the field of endocrine surgery, there has been an increase in Turkey's importance on the international platform.

The Turkish Journal of Gastroenterology

We consider three popular affirmative action policies in school choice: quota-based, priority-bas... more We consider three popular affirmative action policies in school choice: quota-based, priority-based, and reserve-based affirmative actions. The Boston mechanism (BM) is responsive to the latter two policies in that a stronger priority-based or reserve-based affirmative action makes some minority student better off. However, a stronger quotabased affirmative action may yield a Pareto inferior outcome for the minority under the BM . These positive results disappear once we look for a stronger welfare consequence on the minority or focus on BM equilibrium outcomes.

2020 Innovations in Intelligent Systems and Applications Conference (ASYU), 2020

In this study, churn analysis of mobile operators is applied on a data set obtained with the part... more In this study, churn analysis of mobile operators is applied on a data set obtained with the participation of different mobile operator users in Turkey. We also classify the mobile users according to their mobile operators by using machine learning techniques. We use Decision Trees, K-nearest neighbors, Support Vector Machines, Logistic Regression, Naive Bayes, Artificial Neural Network classification algorithms and Gradient Boosting, Random Forests, Adaboost and Maximum Voting ensemble learning algorithms. As a result, we see that the best performance classification results are obtained by maximum voting method and all results are interpreted and shared.

Aim: To evaluate clinical characteristics of the patients that underwent surgery for suspicious a... more Aim: To evaluate clinical characteristics of the patients that underwent surgery for suspicious adnexal masses and diagnosed as extra-genital benign and milign diseases. Material And Methods: A total of 770 patients that had operated at gynecologic oncology department for a suspicious ovarian mass were investigated. Of the patients 28 were diagnosed as extra ovarian diseases presenting abdominal or pelvic mass. Collected data were age, diagnosis, tumor markers, imaging findings, tumor diameters, stage, time for follow up, overall survival, pathology results. Results: Final diagnosis of the patients that had a prediagnosis of ovarian cancer were as follows: 10 (35,7%) with appendix carcinoma, 6 (21%) with colon or breast cancer metastasis, 6 (21%) with tuberculosis, 3 (10,7) with gastrointestinal stromal tumor (GIST), 2 (7,1%) with diffuse large B cell lymphoma, 1 (3,6%) with peritoneal mesotelioma, 1 (3,6) with chronic lymphocytic leukemia (CLL). A radical appendectomy and ileotrans...

The Journal of Pediatric Research

Surgical methods are the most commonly used methods in the treatment of pilonidal sinus (PS) in t... more Surgical methods are the most commonly used methods in the treatment of pilonidal sinus (PS) in the world but their recovery durations and return to work/school periods are long and the complication rates are high. Among minimally invasive methods, phenol therapy is frequently used in adults and successful results are reported. However, studies on phenol treatment in adolescents with PS are limited and the number of patients is small. Therefore, our study aims to determine whether 80% liquid phenol treatment can be used as first-line therapy in this age group. Materials and Methods: Primary and recurrent SPS patients aged between 14 and 19 years who were treated with 80% liquid phenol were included in this study. Patient data were obtained from their files retrospectively. Results: Of the patients, 69 (69.7%) were male and 30 (30.3%) were female. The mean age of the patients was 17.4±1.3 (min-max 14-19). The total recurrence and complication rates after phenol administration were 10.7% and 16.1%, respectively. According to the Likert-type questionnaire, the mean satisfaction rate was 8.7±1.7 (min-max 5-10). Conclusion: In our study, it has been shown that 80% liquid phenol treatment can be successfully applied in adolescents with PS with low recurrence and low major complication rates. In addition, we think that 80% liquid phenol treatment should be recommended as the first-line treatment option for both primary and postoperative recurrent adolescent patients with PS, as it ensures a quicker return to work /school and shows high satisfaction rates.

Polish Journal of Radiology

The aim of this study was to investigate the impact of the primary location of colorectal adenoca... more The aim of this study was to investigate the impact of the primary location of colorectal adenocarcinoma on the lobar distribution of its hepatic metastases based on the streamline hypothesis. Material and methods: The hospital database was utilised to identify the colorectal cancer patients. Eighty-six patients diagnosed with colorectal adenocarcinoma, who had hepatic metastases on the initial diagnostic stage or on the follow-up investigations, were enrolled the study. Computed tomography (CT) images of the study population were reviewed for the primary location of the colorectal tumour, and the side and number of hepatic metastases. Results: A total of 481 metastases were counted on CT from 22 right-sided and 64 left-sided colon tumours. The ratio of right-to-left hemiliver involvement was 1.97 : 1 for whole study population. The right-to-left ratio was calculated as 1.55 : 1 for right colon tumours and 2.17 : 1 for left colon tumours (p = 0.106). In the subgroup analysis with unilobar metastatic patients, again there was no significant difference in terms of the colorectal tumours' primary location (p = 0.325). Conclusions: The lobar distribution of hepatic metastases from colorectal adenocarcinoma may not be associated with the primary tumour localisation

The Journal of Tepecik Education and Research Hospital

Primary gallbladder pleomorphic sarcoma is a very rarely seen type of tumor and its prognosis is ... more Primary gallbladder pleomorphic sarcoma is a very rarely seen type of tumor and its prognosis is not well known mainly due to the limited number of cases reported. Here, we present a case with primary gallbladder pleomorphic sarcoma of which diagnosis was based on morphology and immunohistochemistry. A 70-year-old male presented with three months of abdominal pain in the upper right quadrant and weight loss. The patient reported a past medical history of chronic cholecystitis. Using abdominal magnetic resonance imaging (MRI), the patient was diagnosed with gallbladder cancer. Radical cholecystectomy, with segment 4b and 5 resection of the underlying liver tissue and dissection of the pericholedochal lymph nodes were performed. Patient's postoperative course was unremarkable and he was discharged on the postoperative 5 th day. The immunohistochemical analyses supported the diagnosis of primary gallbladder pleomorphic sarcoma. The patient was referred to the department medical oncology for adjuvant chemotherapy Primary gallbladder pleomorphic sarcoma is a very rare histological type with an unclear pathogenesis. A better understanding of pathogenesis and treatment for this disease, with the larger case series may be better addressed.

Ege Tıp Bilimleri Dergisi

ÖZET "Burned-out testis tümörü" nadir görülen bir tümör türüdür. Burned out fenomeni, testisteki ... more ÖZET "Burned-out testis tümörü" nadir görülen bir tümör türüdür. Burned out fenomeni, testisteki germ hücreli tümörün parsiyel ya da tamamen regrese olup, mediastinal, servikal, aksiller, retroperitoneal lenf nodları veya retroperitonal bölgeye metastaz ile bulgu vermesi olarak tanımlanır. Yapılan fizik muayenede testis muayenesi olağandır. 31 yaşında erkek hasta sırt ve karın ağrısı yakınması ile başvurdu. Yapılan fizik muayenesinde patolojik bulguya rastlanılmadı. Çekilen abdomen tomografide retroperitoneal kitle saptandı. Retroperitoneal kitle eksizyonu, paraaortik, parakaval ve retroperitoneal lenf nodu diseksiyonu uygulandı. Hastanın postoperatif dönemi komplikasyonsuz olup, postoperatif beşinci gün taburcu edilmiştir. Patoloji sonucu, seminom metastazı olarak raporlanmıştır. Retroperitoneal kitle ile karşımıza çıkan genç hastalarda burned out tümörlerin metastazları olabileceği akılda tutulmalıdır. Burned-out tümörlerin tedavi seçenekleri zamanla değişebilir. Farklı risk faktörlerini tanımlamak ve tedavinin optimize edilmesine yardımcı olabilmek için daha geniş olgu serileri yayınlanmalıdır.

Turkiye Klinikleri Journal of Case Reports

M Me ec ck ke el l' 's s D Di iv ve er rt ti ic cu ul lu um m P Pe er rf fo or ra at ti io on n D... more M Me ec ck ke el l' 's s D Di iv ve er rt ti ic cu ul lu um m P Pe er rf fo or ra at ti io on n D Du ue e t to o S St tr ra an ng gu ul la at te ed d I In ng gu ui in na al l H He er rn ni ia a ((L Li it tt tr re e' 's s H He er rn ni ia a)): : A A R Ra ar re e C Ca as se e Mehmet ÜSTÜN, Halit Batuhan DEMİR, Cengiz AYDIN 62 A An n U Un nc co om mm mo on n U Up pp pe er r G Ga as st tr ro oi in nt te es st ti in na al l S Sy ys st te em m E En nd do os sc co op py y C Co om mp pl li ic ca at ti io on n: : T Te em mp po or ro om ma an nd di ib bu ul la ar r J Jo oi in nt t D Di is sl lo oc ca at ti io on n Sertaç Ata GÜLER, Ahmet MUTLU, Turgay ŞİMŞEK, Nuh Zafer CANTÜRK 65 A A W We el ll l D Di is sg gu ui is se ed d P Pl le eu ur ra al l M Me et ta as st ta as si is s o of f B Br re ea as st t C Ca ar rc ci in no om ma a Murat SARIÇAM 68 A A R Ra ar re e L Lo oc ca al li iz za at ti io on n o of f E En nd do om me et tr ri io os si is s: : L La ab bi iu um m M Mi in nu us s Adeviye ELÇİ ATILGAN, Fedi ERCAN, Fatma KILIÇ 72 R Re ec cu ur rr re en nt t C Ca as se e o of f a a R Ra ar re e a an nd d D De ev va as st ta at ti in ng g E En nt ti it ty y: : H Ha ar rl le eq qu ui in n I Ic ch ht th hy yo os si is s Ayşegül ALKILIÇ, Özgür KAN, Elif Nazlı ÇETİNDAĞ AYDIN 75 T Th he e F Fi ir rs st t C Ca as se e o of f F Fi ib br ro oe ep pi it th he el li ia al l P Po ol ly yp p O Or ri ig gi in na at te ed d f fr ro om m t th he e M Ma ax xi il ll la ar ry y S Si in nu us s Dastan TEMIRBEKOV, Erdal SAKALLI 79 S Sp po on nt ta an ne eo ou us s R Re en na al l S Su ub bc ca ap ps su ul la ar r H He em ma at to om ma a D Du ue e t to o U Un nc co on nt tr ro ol ll le ed d H Hy yp pe er rt te en ns si io on n D Di is se ea as se e

MANAS Sosyal Araştırmalar Dergisi

Tüketicilerin yaşam tarzlarının değişmesi ile beraber geleneksel alışverişe alternatif olarak eti... more Tüketicilerin yaşam tarzlarının değişmesi ile beraber geleneksel alışverişe alternatif olarak eticaret sitelerinin kullanımı her geçen gün artmaktadır. Ancak tüketicilerin bir kısmı değişen alışveriş şekillerine oldukça önyargılı olarak bakmaktadır. Bu çalışma da ilk olarak, internetten alışveriş yapan tüketicilerin risk ve güvenlik algılarının demografik özelliklere göre değişimi incelenmiştir. Daha sonra, regresyon analizi yaparak bu algının belirlenen soyut ve somut kavramlar arasında ki ilişkisi analiz edilerek kurulan hipotezler değerlendirilmiştir.

Journal of Surgery and Medicine

Parathyroid carcinoma is one of the rare endocrine tumors and constitutes 1% of the cases with pr... more Parathyroid carcinoma is one of the rare endocrine tumors and constitutes 1% of the cases with primary hyperparathyroidism. Because of similar imaging modalities and similar clinical findings, it is difficult to distinguish between preoperative parathyroid adenomas and parathyroid carcinoma. A 70-year-old female patient presented with fatigue and generalized bone pain. Her laboratory tests, neck and parathyroid scintigraphy were compatible with primary hyperparathyroidism with a significantly elevated level of parathormone. With the imaging methods which supported parathyroid adenoma, the patient was operated with a presumptive diagnosis of primary hyperparathyroidism due to parathyroid adenoma. The postoperative course was unremarkable and she was discharged on the postoperative fifth day. Postoperative pathology was reported as parathyroid carcinoma developed in a parathyroid adenoma. Parathyroid carcinoma and parathyroid adenoma have similar clinically and imaging methods, it is difficult to diagnose preoperatively.

Ege Tıp Dergisi

Apendiks vermiform, nadir olarak karın duvarı fıtıkları içerisinde yer alabilmektedir. Akut karın... more Apendiks vermiform, nadir olarak karın duvarı fıtıkları içerisinde yer alabilmektedir. Akut karın tablosunun ek sık sebebi olan akut apandisit, bu herni keseleri içinde de görülebilmektedir. İnkarsere insizyonel herni kesesi içerisinde perfore apandisit saptanan bir hastaya, apendektomi ve anatomik onarım uyguladık. İnkarsere karın duvarı fıtıkları içerisinde inflame apendiks nadir de olsa görülebilmektedir.