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Featured researches published by Çetin Kotan.


Cases Journal | 2009

Sigmoid volvulus in pregnancy and puerperium: a case series.

Mertihan Kurdoglu; Ertan Adali; Recep Yildizhan; H. Guler Sahin; Çetin Kotan

Intestinal obstruction due to sigmoid volvulus during pregnancy is rare. The presenting signs/symptoms seen in these patients are the same as with non-pregnant patients. Fetal and maternal mortality rates are higher during pregnancy due to delays in diagnosis. We aimed to present four patients diagnosed with sigmoid volvulus during pregnancy and puerperium in our clinic. Diagnosis requires a high index of suspicion in a patient who presents with complaints of abdominal pain and evidence of bowel obstruction. Prompt intervention is necessary to minimize maternal and fetal morbidity and mortality.


World Journal of Gastroenterology | 2011

Levels of matrix metalloproteinase-1 and tissue inhibitors of metalloproteinase-1 in gastric cancer

Ozgur Kemik; Ahu Sarbay Kemik; Aziz Sümer; Ahmet Cumhur Dulger; Mine Adas; Huseyin Begenik; Ismail Hasirci; Özkan Yılmaz; Sevim Purisa; Erol Kisli; Sefa Tuzun; Çetin Kotan

AIM To evaluate the levels of preoperative serum matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in gastric cancer. METHODS One hundred gastric cancer patients who underwent gastrectomy were enrolled in this study. The serum concentrations of MMP-1 and TIMP-1 in these patients and in fifty healthy controls were determined using an enzyme-linked immunosorbent assay. RESULTS Higher serum MMP-1 and TIMP-1 levels were observed in patients than in controls (P < 0.001). Serum MMP-1 and TIMP-1 levels were positively associated with morphological appearance, tumor size, depth of wall invasion, lymph node metastasis, liver metastasis, perineural invasion, and pathological stage. They were not significantly associated with age, gender, tumor location, or histological type. CONCLUSION Increased MMP-1 and TIMP-1 were associated with gastric cancer. Although these markers are not good markers for diagnosis, these markers show in advanced gastric cancer.


World Journal of Emergency Surgery | 2008

An analysis of 13 patients with perforated gastric carcinoma: A surgeon's nightmare?

Çetin Kotan; Aziz Sümer; Murat Baser; Remzi Kızıltan; M. Ali Çarparlar

Background and ObjectivesPerforation is a rare complication of gastric carcinoma and generally not diagnosed preoperatively. To clarify the clinicopathologic characteristics of patients with this condition we reviewed 13 cases of gastric cancer perforation who required emergency surgery.MethodsA total of 13 patients with gastric cancer perforation were retrospectively reviewed. The clinicopathological features including tumor stage and survival and also the type of treatment were analyzed and compared to literature data.ResultsThere were 13 patients (10 males and 3 females) with a mean age of 59.0 ± 9.56 years. The incidence of perforated gastric cancer was 9.6% among gastric carcinoma and 4.2% of all gastric perforation cases. The perforation was more frequently in stage III–IV (2–10), but one case of stage II (T3N0M0) gastric cancer was also observed. None of the patients had curative resection or radical lymph-node dissection. Six (46%) patients were treated by palliative, local surgery. Emergency gastrectomy were performed in 7 (54%) patients. Overall 30-day mortality rate was % 46. The overall survival time was 128.2 ± 184.8 days for all patients, it was 52.8 ± 52.9 days for locally treated group, and 192.9 ± 235.4 days for patients who underwent resectional surgery. The difference between the treatment groups was not significantConclusionPerforation usually occurs in advanced stages of gastric cancer. These patients had a poor prognosis because of the presence of advanced cancer.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 2000

Transverse uterine incision non-closure versus closure: an experimental study in dogs.

Abdülaziz Gül; Çetin Kotan; Serdar Uǧraş; Muhammet Alan; Talip Gül

This study was conducted to test the hypothesis that non-closure of all layers of the uterus during low transverse cesarean section is not associated with increased intra-operative or immediate and late postoperative complication. Eleven pregnant dogs underwent cesarean section for the evaluation of non-closure and closure of all layers of the uterus on immediate or early and late postoperative complication and the effect of suture in tissue. Statistical analysis was performed using Students t-test for continuous variables and analysis for qualitative variables. Significance was defined as P < 0.05. The ranges of wound infection, other morbidity, and mortality were similar between the groups. The average operating time was significantly less for the non-closure group (71.00+/-7.11 min) than for the closure group (92.00+/-6.12 min; P < 0.005). Adhesion was significantly less (P < 0.001) for the non-closure group than for the closure group. The ranges of myometrial necrosis (5/5: 100% versus 0/5: 00%; P < 0.001) and fibrosis (2/5: 40% versus 0/5: 00%; P < 0.01) were significantly higher for the closure group than for the open group. It was found that non-closure of all layers of the uterus at low transverse cesarean incision had no adverse effect on immediate and late postoperative complication in dogs. Our data show that non-closure of all layers of the uterus at low transverse cesarean incision results in significantly less muscular necrosis and fibrosis than in the closure group. We suggest that non-closure and/or at least non-vigorous locking but very simple closure of all layers of the uterus at low transverse cesarean incision may be preferential in appropriate cases.


Case Reports in Medicine | 2010

Gossypiboma: Retained Surgical Sponge after a Gynecologic Procedure

Aziz Sümer; M. Ali Çarparlar; Ömer Uslukaya; Vedat Bayrak; Çetin Kotan; Ozgur Kemik; Ümit İliklerden

We report on a case of gossypiboma. A 54-year-old woman was admitted to our hospital with abdominal mass. She had undergone a caesarean operation 23 years previously. The mass in the right abdominal quadrant was suspected by abdominal computed tomography and magnetic resonance imaging. The mass was removed by laparotomy excision and the final diagnosis was gossypiboma.


Case Reports in Medicine | 2010

Small Bowel Obstruction due to Mesodiverticular Band of Meckel's Diverticulum: A Case Report

Aziz Sümer; Ozgur Kemik; Aydemir Olmez; A. Cumhur Dulger; Ismail Hasirci; Ümit İliklerden; Erol Kisli; Çetin Kotan

Meckels diverticulum is the most common congenital anomaly of the small intestine. Common complications related to a Meckels diverticulum include haemorrhage, intestinal obstruction, and inflammation. Small bowel obstruction due to mesodiverticular band of Meckels diverticulum is a rare complication. Herein, we report the diagnosis and management of a small bowel obstruction occurring due to mesodiverticular band of a Meckels diverticulum.


Biomarkers in Cancer | 2011

Serum YKL-40 Levels in Patients with Gastric Cancer

Veyis Itik; Ozgur Kemik; Ahu Sarbay Kemik; A. Cumhur Dulger; Aziz Sümer; Yasemin Usul Soyoral; Huseyin Begenik; Sevim Purisa; Çetin Kotan

Aims and background YKL-40 is secreted by several types of tumors. Increased serum YKL-40 levels have been reported in prostate, glioblastoma, breast and colorectal cancers. Determination of YKL-40 levels may serve as a valuable biomarker for the diagnosis and treatment of gastric cancer. The purpose of this study was to determine the serum YKL-40 levels expressed in gastric carcinomas. Methods Between 2009 and 2011, we retrospectively reviewed 100 patients with gastric cancer and compared their serum samples to 75 healthy volunteers. YKL-40 levels were determined by an enzyme-linked immunosorbent assay (ELISA). Results We found significantly higher serum levels of YKL-40 in patients with gastric cancer compared to the healthy population (P < 0.0001). We also found significant differences in serum YKL-40 levels between female and male patients with gastric cancer (P < 0.01). Conclusions YKL-40 is over-expressed in gastric cancer, suggesting a more aggressive phenotype. YKL-40 may be a useful serum biomarker for gastric cancer identification, and future studies should focus on the role of YKL-40 in the tumorigenesis of gastric cancer and responsiveness toward treatment.


Acta Chirurgica Belgica | 2005

Noncurative total gastrectomy and oesophagogastrectomy in the treatment of advanced gastric carcinoma in a country with high incidence.

Çetin Kotan; Erol Kisli; R. Sönmez; O. Cikman; M. Arslan; Hasan Arslantürk; O. Soylemez; Murat Baser

Abstract The role of extensive resectional surgery, including total gastrectomy for the palliation of advanced gastric cancer is controversial. This study shows operative results with complications and mortality occurring after total gastrectomy in patients with advanced stage gastric carcinoma. The study included 83 (48 males and 35 females, median age was 54.6 ± 11.4 years) patients who underwent palliative total gastrectomy or oesophagogastrectomy (distal oesophagectomy in continuity with total gastrectomy). The reason for nonradical treatment was a too locally advanced disease. There was no case of carcinoma without serosal extension. Only five patients were free of histological lymph node metastases. A total of 72 (86.7%) early postoperative complications, including 17 self-limited wound complications, and 21 pulmonary complications were noted. Dehiscence of the oesophagojejunal anastomosis was noted in 7 patients, 3 of whom subsequently died. A total of 8 (9.6%) patients died in the postoperative period. The mean survival period was 12.8 ±0.8 months for all patients. It was 18.16 ± 2.04 months in stage IIIA patients, 13.37 ± 0.79 months in stage IIIB, and 7.51 ± 0.97 months in stage IV patients. Total gastrectomy is a relatively safe procedure even when performing as a palliative procedure, with acceptable mortality and low lethal complication rate, and should be considered an alternative option in palliative treatment of advanced gastric cancer.


Case Reports in Surgery | 2015

A Rare Complication of Biliary Stent Migration: Small Bowel Perforation in a Patient with Incisional Hernia.

Özkan Yılmaz; Remzi Kızıltan; Oktay Aydin; Vedat Bayrak; Çetin Kotan

Endoscopic biliary stents have been recently applied with increasing frequency as a palliative and curable method in several benign and malignant diseases. As a reminder, although most of the migrated stents pass through the intestinal tract without symptoms, a small portion can lead to complications. Herein, we present a case of intestinal perforation caused by a biliary stent in the hernia of a patient with a rarely encountered incarcerated incisional hernia.


Medicinski glasnik : official publication of the Medical Association of Zenica-Doboj Canton, Bosnia and Herzegovina | 2016

Factors affecting mortality in emergency surgery in cases of complicated colorectal cancer.

Remzi Kızıltan; Özkan Yılmaz; Abbas Aras; Sebahattin Celik; Çetin Kotan

AIM To evaluate retrospectively demographic, clinical and histopathological variables effective on mortality in patients who had undergone emergency surgery due to complicated colorectal cancer. METHODS A total of 39 patients underwent urgent surgical interventions due to complicated colorectal cancer at the Department of General Surgery, Dursun Odabaş Medical Center, between January 2010 and January 2015. Thirty three of these were included in the study. Six patients were excluded because complete medical records had been missing. Medical records of the 33 cases were retrospectively reviewed. RESULTS There were 14 (42.5%) male and 19 (57.5%) female patients. Mean age was 60 years (range: 32- 83 years); 14 (42.5%) patients were less than 60 years old , while 19 (57.5%) were 60 years old or older. Operations were performed due to perforation (39.3%) and obstruction (60.6%) in 13 and 20 patients, respectively. Tumor localization was in the right and transverse colon in nine (21.2%) and in the left colon in 24 cases (72.7%). Eleven (33.3%) patients underwent resection and anastomosis, 13 (39.3%) resection and ostomy, and nine (27.2%) patients underwent ostomy alone without any resection. Postoperative mortality occurred in nine cases (27.2%). CONCLUSIONS High mortality should be expected in females older than 60 years with a left sided colon tumor or with another synchronous tumor and in perforated tumors. Unnecessary major resections should be avoided and primary pathology should be in the focus of treatment in order to decrease the mortality and morbidity rates.

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Özkan Yılmaz

Yüzüncü Yıl University

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Remzi Kızıltan

Yüzüncü Yıl University

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Aziz Sümer

Yüzüncü Yıl University

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Erol Kisli

Yüzüncü Yıl University

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Abbas Aras

Yüzüncü Yıl University

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Ozgur Kemik

Yüzüncü Yıl University

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Sebahattin Celik

Yüzüncü Yıl University

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Hasan Arslantürk

Yüzüncü Yıl University

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