Publications by authors named "Yusuf B Ozogul"

Background: Choledochal cysts are seen commonly in Asian populations, but rarely in Western populations. The pathogenesis of these premalignant lesions is not fully understood yet and the risk of malignant transformation increases with age. The overall malignancy risk is 10%-15% in East Asian countries.

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Background: Laparoscopic cholecystectomy (LC)-related bile duct injuries remains a challenging issue with major implications for patient's outcome.

Methods: Between January 2008 and December 2012, we retrospectively analyzed the management and treatment outcomes of 90 patients with bile duct injury following LC.

Results: Forty-seven patients (52.

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Introduction: Solid-pseudopapillary tumor (SPT) of the pancreas is a rare tumor, generally characterized by a well-encapsulated mass. The aim of the current study was to analyse the clinicopathological characteristics and treatment outcomes of patients with SPT. In this study, we report our clinical experience with 16 cases of SPTs.

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Background/aims: Controversies still exist regarding the management of giant hemangiomas. The purpose of this study was to evaluate in a retrospective manner the effects of size and type of surgical procedures on early postoperative results.

Methodology: Between January 2000 and January 2011, a total of 82 patients underwent surgery.

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Primary anorectal malignant melanoma is an exceptionally rare neoplasm associated with poor prognosis. Anorectal malignant melanoma has been very rarely described with coexisting primary tumors of the colorectum. A 56-year-old female patient was admitted with a history of rectal bleeding.

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Background: The most important criterion in the management of endoscopic retrograde cholangiopancreatography (ERCP)-related perforations is the delineation of the injury pattern. The aim of the present study was to evaluate in a retrospective manner the patients who undergo surgery due to ERCP-related perforations.

Patients And Methods: Between January 2006 and December 2010, a total of 9209 ERCPs were performed at Turkiye Yuksek Ihtisas Teaching and Research Hospital, Ankara, Turkey.

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Background/aims: The aim of this study was to determine the ratio of patients with positive peritoneal cytology who underwent radical gastrectomy for gastric cancer, to evaluate the factors effecting risk of positive cytology and to analyze the effects cytology findings on survival.

Methodology: Peritoneal lavage samples were obtained from 255 patients who underwent radical gastrectomy with D2 (184 patients) or D3 (71 patients) lymph node dissection between January 2000 and December 2007.

Results: Thirty-six (14.

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Background/aims: Choledochal cysts are rare congenital anomalies of the pancreaticobiliary system, whose etiology remains unknown. We aimed to review patients with choledochal cysts and to compare our results with current literature.

Methodology: Twenty-three patients diagnosed as having choledochal cysts between January 2004 and July 2010 were evaluated retrospectively.

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Background: The current hemostatic data in relation to laparoscopic cholecystectomy (LC) is limited particularly for patients receiving chronic oral anticoagulant treatment. The aim of this study is to assess hemostatic alterations before, during and after LC for the patients placed on long-term oral anticoagulant treatment.

Patients And Methods: A prospective, nonrandomized, controlled study was designed to compare the characteristics, hemostatic system, and postoperative complications of patients maintained on long-term anticoagulation with those who did not receive such therapy.

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Background/aims: We aimed to evaluate the impact of age on short-term surgical outcomes and to investigate the risk factors for postoperative mortality in 660 Turkish colorectal cancer patients.

Methods: Between January 2002 and January 2007, 660 consecutive patients who were operated for colorectal cancer at our institution were enrolled in this study. The patients were divided into two groups as: a younger group (<70 years) and an older group (≥70 years).

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Background: Laparoscopic cholecystectomy (LC) has become the standard surgical procedure for symptomatic gallbladder disease. The aim of this study was to identify factors that may be predictive of cases that would require a conversion to laparotomy.

Methods: In the period of 2002-2007, 2015 patients who underwent elective LC were included in the study.

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Purpose: The aim of this study was to evaluate the effects of advanced age on early postoperative results and to investigate risk factors for mortality in Turkish gastric cancer patients.

Methods: From 2002 to 2007, 549 patients who underwent gastrectomy for gastric cancer were divided into two groups as patients younger than 70 years and patients aged 70 years or older.

Results: There were 387 patients in the younger group and 162 in the older group.

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Background: When used separately, antineoplastic agents and carbon dioxide (CO(2)) pneumoperitoneum have been reported to impair anastomotic healing in experimental animals. However, the effects of their combined use have not been previously investigated. The aim of this study was to investigate the possibility that neoadjuvant chemotherapy with 5-fluorouracil followed by CO(2) pneumoperitoneum would affect the healing of anastomoses in the colon.

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Bile duct injury is a serious complication of laparoscopic cholecystectomy. We report a case of spontaneous hepaticoduodenal fistula following bile duct injury. Initially, Roux-en-Y hepaticojejunostomy had been planned for the patient, but as the patient did not show any symptoms or findings of biliary obstruction, we preferred a non-operative management.

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Background And Aims: Among patients on long-term anticoagulant therapy who undergo laparoscopic cholecystectomy (LC), bleeding complications have not been extensively investigated. The objective of this study was therefore to investigate postoperative bleeding complications prospectively in patients on chronic oral anticoagulation.

Materials And Methods: In the period of January 2002 to December 2007, 44 patients on long-term anticoagulation with warfarin, an oral anticoagulant (OAC), underwent LC in our center.

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Background: Multiple organ resection for locally advanced (assumed T4) gastric cancer is associated with high morbidity and mortality. Our aim was to evaluate the efficacy of these surgeries with regard to surgical morbidity, mortality, and survival.

Methods: Fifty-six patients underwent potentially radical gastrectomy combined with invaded organ resection.

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Angiodysplasia is primarily a disease of the elderly, and it is rarely encountered in the pediatric population. We report a case of diffuse colorectal angiodysplasia, diagnosed postoperatively in a 13-year-old boy who underwent hand-assisted laparoscopic total proctocolectomy and ileal pouch anal anastomosis (IPAA) for assumed corticosteroid-resistant ulcerative colitis. The findings of preoperative repeated colonoscopies and biopsies had been consistent with active colitis.

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The aim of this study is to evaluate the effects of duration of carbon dioxide (CO(2)) pneumoperitoneum on experimental colonic anastomosis. Forty-eight male Sprague-Dawley rats were used. The rats were divided into three groups.

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