Sezai Leventoǧlu

Prof. Dr. Sezai Leventoǧlu


Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 May 2022 in The Lancet Global Health
Verified
Journal Article
Open access
CSCatherine A Shaw
Catherine A Shaw
RPRiinu Pius
Riinu Pius
TDThomas M Drake
Thomas M Drake
LNLisa Norman
Lisa Norman
AAAdesoji O Ademuyiwa
Adesoji O Ademuyiwa
JLJean Wilguens Lartigue
Jean Wilguens Lartigue
Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide. A multimethods analysis was performed as part of the GlobalSurg 3 study—a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital. Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3·85 [95% CI 2·58–5·75]; p<0·0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63·0% vs 82·7%; OR 0·35 [0·23–0·53]; p<0·0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer. Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised. National Institute for Health and Care Research.

1 March 2022 in Medicina
Verified
Journal Article
Open access
PDF file
SLSezai Leventoǧlu
Sezai Leventoǧlu
BMBulent Mentes
Bulent Mentes
BBBengi Balci
Bengi Balci
HKHalil Can Kebiz
Halil Can Kebiz
Anal stenosis, which develops as a result of aggressive excisional hemorrhoidectomy, especially with the stoutly use of advanced technologies (LigaSure®, ultrasonic dissector, laser, etc.), has become common, causing significant deterioration in the patient’s quality of life. Although non-surgical treatment is effective for mild anal stenosis, surgical reconstruction is unavoidable for moderate to severe anal stenosis that causes distressing, severe anal pain, and inability to defecate. The problem in anal stenosis, unlike anal fissure, is that the skin does not stretch as a result of chronic fibrosis due to surgery. Therefore, the application of lateral internal sphincterotomy does not provide satisfactory results in the treatment of anal stenosis. Surgical treatment methods are based on the use of flaps of different shapes and sizes to reconstruct the anal caliber and flexibility. This article aims to summarize most-used surgical techniques for anal stenosis regarding functional and surgical outcomes.

27 November 2021 in World Journal of Gastrointestinal Surgery
Verified
Journal Article
Open access
BBBengi Balci
Bengi Balci
AYAlp Yildiz
Alp Yildiz
SLSezai Leventoǧlu
Sezai Leventoǧlu
BMBulent Mentes
Bulent Mentes
Retrorectal tumors: A challenge for the surgeons

4 December 2012 in Techniques in Coloproctology
Verified
Journal Article
Closed access
PDF file
SLSezai Leventoǧlu
Sezai Leventoǧlu
BEB. Ege
B. Ege
BMB. B. Menteş
B. B. Menteş
MYM. Yörübulut
M. Yörübulut
SSS. Soydan
S. Soydan
BAB. Aytaç
B. Aytaç

15 February 2021 in Turkish Journal of Gastroenterology
Verified
Journal Article
Closed access
RKRamazan KOZAN
Ramazan KOZAN
SÖSafa Özaydın
Safa Özaydın
HBHüseyin Bayhan
Hüseyin Bayhan
SLSezai Leventoǧlu
Sezai Leventoǧlu
AKAhmet Karamercan
Ahmet Karamercan
AAAbdülkadir Bülent Aytaç
Abdülkadir Bülent Aytaç
Investigate the effect of histopathology results on treatment modality and surgery strategy. The validity of the selective histopathology approach was questioned. Methods: The data of patients undergoing laparoscopic cholecystectomy between January 2009 and December 2019 were retrospectively analyzed. The demographics and histopathology results, whether the operation was emergent or elective, and the reasons for conversion to open surgery were recorded. Malignant and precursor histopathology diagnoses were examined, and their relationship with the surgical strategy was questioned. Results: A total of 2723 patients were included in the study. Of these patients, 2600 (95.5%) were operated under elective, while 123 (4.5%) were operated under emergency conditions. While the surgery was completed laparoscopically in 2685 (98.6%) patients, it was converted to open surgery in 38 (1.4%) patients. Age, gender, the presence of primary gallbladder cancer, acute cholecystitis, and xanthogranulomatous cholecystitis in histopathological examination were found to be independent predictive factors for conversion to open surgery (P < .05). The rate of primary invasive carcinoma in the series was 0.1%. Conclusion: Routine histopathological examination of the gallbladder is important for demonstrating a wide spectrum of pathological changes in this organ. Invasive cancer or precursor lesions can be detected even in patients without any macroscopic abnormality. Histopathological examination also plays a role in determining follow-up, further examination, and treatment modality in addition to the diagnosis in these patients.

24 November 2023 in BMC Surgery
Verified
Journal Article
Open access
PDF file
BBBengi Balci
Bengi Balci
SLSezai Leventoǧlu
Sezai Leventoǧlu
IOIgbal Osmanov
Igbal Osmanov
BEBeyza Erkan
Beyza Erkan
YIYasemin Irkilata
Yasemin Irkilata
BMBulent Mentes
Bulent Mentes
Purpose: Obstructed defecation syndrome represents 50–60% of patients with symptoms of constipation. We aimed to compare the two frequently performed surgical methods, laparoscopic ventral mesh rectopexy and transperineal mesh repair, for this condition in terms of functional and surgical outcomes. Methods: This study is a retrospective review of 131 female patients who were diagnosed with obstructed defecation syndrome, attributed to rectocele with or without rectal intussusception, enterocele, hysterocele or cystocele, and who underwent either laparoscopic ventral mesh rectopexy or transperineal mesh repair. Patients were evaluated for surgical outcomes based on the operative time, the length of hospital stay, operative complications, using prospectively designed charts. Functional outcome was assessed by using the Initial Measurement of Patient-Reported Pelvic Floor Complaints Tool. Results: Fifty-one patients diagnosed with complex rectocele underwent laparoscopic ventral mesh rectopexy, and 80 patients diagnosed with simple rectocele underwent transperineal mesh repair. Mean age was found to be 50.35 ± 13.51 years, and mean parity 2.14 ± 1.47. Obstructed defecation symptoms significantly improved in both study groups, as measured by the Colorectal Anal Distress Inventory, Constipation Severity Instrument and Patient Assessment of Constipation-Symptoms scores. Minor postoperative complications including wound dehiscence (n = 3) and wound infection (n = 2) occurred in the transperineal mesh repair group. Conclusion: Laparoscopic ventral mesh rectopexy and transperineal mesh repair are efficient and comparable techniques in terms of improvement in constipation symptoms related to obstructed defecation syndrome. A selective distribution of patients with or without multicompartmental prolapse to one of the treatment arms might be the preferred strategy.