Publications by authors named "Gokhan Ozuner"

Introduction: Incidence of early-onset colorectal cancer (EO-CRC) is increasing in younger demographics. This study analyzes disease-specific survival in individuals under 50 years of age.

Methods: Patients with colorectal malignancy were identified in the Surveillance Epidemiology and End Results (SEER) database from 2004 to 2015.

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Objectives: Rectocele is common in female patients. To date, there is no literature comparing outcomes of rectocele repairs in combination with other perineal surgeries. We aim to analyze perioperative morbidity and mortality as well as long-term outcome of rectocele repair in combination with other perineal surgeries (RR combination) and compare this with solo rectocele repair (solo RR).

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Intraoperative colonoscopy (IOC) is an adjunct in colorectal surgery to detect the location of the lesions and assessing anastomotic integrity. The authors aimed to evaluate the safety and feasibility and postoperative morbidity of IOC in left-sided colectomy patients for colorectal cancer. Patients undergoing elective left-sided colectomy without any proximal diversion for colorectal cancer between 2013 and 2016 were reviewed from the American College of Surgeons National Surgical Quality Improvement Program procedure-targeted database.

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Background: An enhanced recovery after surgery (ERAS) protocol was implemented to improve quality and cost effectiveness of surgical care in elective colorectal procedures.

Methods: A retrospective study was conducted from July 2017 to June 2018. The ERAS protocol was initiated on 9 July 2018 and retrospectively reviewed in July 2019 by chart review, the American College of Surgeons National Surgical Quality Improvement Project database and risk stratification using Clavien-Dindo classification for all elective colorectal procedures.

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Purpose: The role of omentoplasty in the prevention of anastomotic leak (AL) in colorectal surgery is controversial. The aim of this study was to evaluate the impact of omentoplasty on AL and septic complications after low pelvic anastomosis using the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database.

Methods: The ACS-NSQIP database was queried for patients who underwent segmental colectomy with low pelvic anastomosis by using 2012 targeted colectomy participant use data file.

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Purpose: Intestinal obstruction is a leading cause of patient mortality and the most common reason for emergent operation in colorectal surgery. The influence of inter-hospital transfer on patients' outcomes varies greatly in different diseases. We aimed to compare the surgical outcomes and medical costs between transferred and directly admitted patients diagnosed with intestinal obstruction in an American tertiary referral center.

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Background: Colonoscopy in patients with diverticulosis can be technically challenging and limited data exist relating to the risk of post-colonoscopy diverticulitis. Our aim was to evaluate the incidence, management, and outcomes of acute diverticulitis following colonoscopy.

Methods: Study design is retrospective cohort study.

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Perineal stapled prolapse resection is a novel approach for treating rectal prolapse in elderly and frail patients. This study aimed to report a modified technique using only a straight linear stapler. A 94-year-old female with 15-cm full thickness rectal prolapse was treated using a linear cutter in the left and right lateral quadrants, and then resection was completed by using the same instrument in the anterior and posterior flaps.

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Background: Porto-mesenteric venous thrombosis (PMVT) is an uncommon but serious complication. Data on the risk factors for PMVT following total colectomy with ileorectal anastomosis or end ileostomy (TC/IRA or EI) is limited. This study aimed to evaluate the factors associated with PMVT after TC/IRA or EI.

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Introduction: The optimal timing for the closure of loop ileostomies remains controversial. The aim of this study is to determine whether ileostomy closure (<3 months post formation) affects stoma-related morbidity compared to late closure (≥3 months post formation).

Methods: All patients who had loop ileostomy and ileostomy closure between 2012 and 2015 were identified from an IRB-approved, prospectively maintained institutional database.

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Data regarding management of colonic diverticulitis in renal transplant recipients (RTRs) are limited. This study aims to identify prevalence, risk factors, and outcomes in RTRs with colonic diverticulosis and diverticulitis. Between January 2004 and December 2013, all patients who underwent kidney transplantation were analyzed.

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Colonic diverticulosis prevalence is gradually increasing worldwide. From 3% to 15% of the patients with diverticulosis will bleed at some point. The risk for rebleeding after the first episode is substantial but varies in the literature between 13-48%.

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Purpose: The aim of this study was to evaluate the impact of various factors on 30-day postoperative morbidity in patients who underwent colorectal surgery (CRS) for colovesical fistula (CVF) in the elective and emergency settings.

Methods: Patients who underwent CRS for CVF between 2005 and 2013 were identified from the American College of Surgeons National Surgical Quality Improvement Program database by using current procedural terminology codes. Demographics, perioperative, and operative factors were assessed and compared between two groups classified according to the presence or absence of postoperative complications.

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Aim: To report our experience on management of colorectal neoplasia during pregnancy and in the postpartum period.

Methods: Patients who were diagnosed with colorectal cancer during pregnancy or in the postpartum period (< 6 mo), between 8/1997 and 4/2013, in our department were reviewed. Patient characteristics, operations, fetal health and follow-up during pregnancy, type of delivery and oncologic outcomes were analyzed.

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Introduction: Whether creation of omental pedicle flap (OPF) to reinforce bowel anastomosis can reduce septic outcomes remains controversial. The aim of this study was to investigate the role of this technique on anastomotic leak and septic complications after rectal cancer surgery.

Methods: Patients who underwent rectal cancer surgery from 01/2008 to 12/2013 were identified and categorized into two groups based on OPF creation versus no-OPF creation.

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Background: This study was conducted to investigate the impact of different hemoglobin level-based transfusion practices on infectious complications after surgery for ulcerative colitis.

Methods: Patients who underwent ileal pouch-anal anastomosis for ulcerative colitis between January 2008 and December 2013 were identified and divided into four groups: group 1 with hemoglobin ≥ 10 and group 2 with hemoglobin ≥ 7 and <10 g/dL who did not receive transfusion and group 3 with hemoglobin ≥ 7 and <10 and group 4 with hemoglobin < 7 g/dL who received transfusion. Clinical characteristics and septic complications within postoperative 30 days were compared.

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Background: The aim of this study is to evaluate the impact of concurrent mesh herniorrhaphy on short-term outcomes of colorectal surgery by using a large, nationwide database.

Methods: Patients who underwent simultaneous ventral hernia repair (VHR) and colorectal surgery between 2005 and 2010 were identified from the American College of Surgeons National Surgical Quality Improvement Program. Patients who underwent VHR with mesh repair were case matched with patients who underwent VHR without mesh based on the type of colorectal procedure, diagnosis, and American Society of Anesthesiologists score.

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Background And Aims: Ulcerative colitis can develop during the reproductive years, and there are limited data about perinatal care for patients with ulcerative colitis. In this study, we analyzed perinatal follow-up, complications, and maternal and fetal outcomes in pregnant patients undergoing surgery for ulcerative colitis.

Methods: Between January 1998 and July 2013, female patients who underwent surgery during pregnancy for abdominal complications of ulcerative colitis and followed up during their pregnancy in our institution were included in our study.

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Purpose: Primary squamous cell carcinomas of the colon and rectum are extremely rare, with an incidence of less than 1% of colorectal malignancies. Our aim in this study was to evaluate patient characteristics, treatment strategy, and postoperative follow-up of patients with colorectal squamous cell carcinoma.

Methods: We reviewed our prospectively maintained colorectal cancer database for all patients who were diagnosed with colorectal squamous cell carcinoma between January 1990 and April 2009.

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Background: The aim of our study was to evaluate factors associated with percutaneous drainage (PCD) failure, complications, and stoma creation for patients undergoing sigmoidectomy for diverticular abscess.

Methods: Data for patients with diverticular abscess greater than or equal to 3 cm in diameter treated with initial PCD from 1994 to 2012 were identified.

Results: One hundred fourteen patients (54% male) with a mean age of 57 years and a mean abscess diameter of 7.

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Background: Nearly half of all incidental splenectomies caused by iatrogenic splenic injury occur during colorectal surgery. This study evaluates factors associated with incidental splenic procedures during colorectal surgery and their impact on short-term outcomes using a nationwide database.

Methods: Patients who underwent colorectal resections between 2005 and 2012 were identified from the American College of Surgeons National Surgical Quality Improvement Program database according to Current Procedural Terminology codes.

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Background: Data on percutaneous drainage followed by observation for diverticular abscess is scant.

Objective: The aim of this study is to assess outcomes of percutaneous drainage alone in the management of peridiverticular abscess.

Design: This is a retrospective study from a prospectively collected database.

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