HASAN TANKUT KÖSEOĞLU

HASAN TANKUT KÖSEOĞLU

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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1 January 2024 in Therapeutic Advances in Gastrointestinal Endoscopy
Verified
Journal Article
Open access
HKHASAN TANKUT KÖSEOĞLU
HASAN TANKUT KÖSEOĞLU
KKKenarli Kenarli
Kenarli Kenarli
AAAhmet Akbay
Ahmet Akbay
ÇEÇağdaṣ Erdoğan
Çağdaṣ Erdoğan
AMAlper Macif
Alper Macif
MYMahmut Yüksel
Mahmut Yüksel
Background: In recent years, various novel surgical and non-surgical therapeutic options have been developed for treating obesity. Due to its disputed success, intragastric botulinum toxin A (BTX-A) injection is still being debated. Objectives: We aim to contribute to this controversial issue in the literature by sharing our center’s findings regarding intragastric BTX-A injections in the treatment of obesity. Design: Patients with a body mass index (BMI) of greater than 25 kg/m2 and at least one obesity-related complication, or a BMI of greater than 30 kg/m2 without complications, were eligible for the study if they were between the ages of 18 and 65. Methods: Following the same procedure, two endoscopists administered BTX-A to all patients. All patients were evaluated for obesity by measuring their lipid profile, hormone profile, and insulin resistance level before treatment. Results: In our study on 82 patients, we saw a significant mean weight loss (−9.2 kg, p < 0.001) in the second month, and there was no additional mean weight loss in the sixth month of follow-up. In addition, this result seems to be independent of the patient’s insulin resistance. We did not see any serious side effects in any of the patients. Conclusion: Although the use of intragastric injection of BTX-A in the treatment of obesity is a controversial issue, we showed in our study that it causes significant weight loss. Further studies are needed on this subject, as it can be a safe method when the ideal dose and application site are combined with appropriate patient selection.

1 October 2022 in Turkish Journal of Gastroenterology
Verified
Journal Article
Open access
EKEmra Asfuroğlu Kalkan
Emra Asfuroğlu Kalkan
ÇKÇağdaş Kalkan
Çağdaş Kalkan
SKSabite Kaçar
Sabite Kaçar
SBSezgin Barutcu
Sezgin Barutcu
MYMahmut Yüksel
Mahmut Yüksel
ISİrFan Soykan
İrFan Soykan
Background: Acute pancreatitis is an abrupt inflammatory disease of the exocrine pancreas and it can occur in different severities. It is becoming more common and more mortal in the gerontal population. The aim of our study was to explore the similarities and differences between young and gerontal patients with acute pancreatitis, with a special emphasis on patients over 80 years of age. Methods: Medical records of patients (n = 1150) with acute pancreatitis were analyzed retrospectively. Several scoring systems including Bedside index for severity in acute pancreatitis, Ranson’s score, Harmless acute pancreatitis score, Acute Physiology and Chronic Health Evaluation, Balthazar Grade, Glasgow score, and Japanese severity score were applied at admission. Patients were divided into 3 groups; group I, young group (n = 706), if they were aged <65 years; group II, older group (n = 338), if they were aged ≥65 years to <80 years; group III, octogenarian group (n = 106), if they were aged ≥ 0 years. Results: In total, 1150 patients with acute pancreatitis were analyzed. Octogenarian group (n = 42, 39.6%) showed a more severe acute pancreatitis compared to patients in group I (n = 15, 2.1%) and II (n = 50, 14.8%, P < .001). Complications were more common in patients in group III (P < .001). Mortality rate was higher in patients in group III (n = 53, 50%) compared to group I (n = 8, 1.1%) and group II (n = 53, 15.7%) (P < .001). Conclusion: Gerontal patients with acute pancreatitis tend to have more severe disease and systemic and local complications. Mortality rates were higher in older patients compared to younger patients. Cite this article as: Asfuroğlu Kalkan E, Kalkan Ç, Kaçar S, et al. Similarities and differences between gerontal and young patients with acute pancreatitis: Evaluation of clinical characteristics and outcomes. Turk J Gastroenterol. 2022;33(10):874-884.

1 July 2022 in Turkish Journal of Gastroenterology
Verified
Journal Article
Closed access
EKEmra Asfuroğlu Kalkan
Emra Asfuroğlu Kalkan
ÇKÇağdaş Kalkan
Çağdaş Kalkan
SBSezgin Barutcu
Sezgin Barutcu
OKOrhan Kucuksahin
Orhan Kucuksahin
ÖTÖzge Güçbey Türker
Özge Güçbey Türker
ISİrFan Soykan
İrFan Soykan
Background: Many rheumatic diseases may cause gastrointestinal manifestations. The goal of this study was to analyze the prevalence and predictors of gastrointestinal involvement in patients with rheumatic disorders. Methods: A retrospective chart review was performed for patients with systemic lupus erythematosus, rheumatoid arthritis, and sys- temic sclerosis who have consulted due to gastrointestinal symptoms. The relationship between clinical symptoms, gastroscopic/colo- noscopic findings, and histopathological results with current drugs and disease duration was evaluated. Results: A total of 364 patients with rheumatic disorders and 740 people as control group were included in the study. Abdominal bloating followed by abdominal pain, regurgitation, and heartburn were reported as the main complaints by more than half of the patients. Most of the patients had gastric mucosal changes expressed as Lanza score, and the presence of major polypharmacy was the most important factor affecting Lanza score (odds ratio: 10, 95% CI: 1.882-54.111, P < .007) followed by disease duration (odds ratio: 1.559, 95% CI: 1.369-1.775, P < .001) and age (odds ratio: 1.069, 95% CI: 1.030-1.109, P < .001). In general, approximately 30% of the patients were posi- tive for Helicobacter pylori infection and 35% showed intestinal metaplasia in histopathological examination. Most of the colonoscopic findings were associated with colonic polyps (n = 81). In multivariate analysis, disease duration was the only factor that affected the pres- ence of colonic lesions (Area Under the Receiver Operating Characteristic (ROC) Curve (AUROC): 0.871, 95% CI: 0.824-0.918, P < .001). Conclusion: Patients with rheumatologic diseases frequently have gastrointestinal manifestations. The most encountered gastrointes- tinal symptom was abdominal bloating, followed by abdominal pain. Being aware of gastrointestinal manifestations and their determi- nants may help physicians manage and follow patients with rheumatologic disorders.

15 April 2023 in Scientific Reports
Verified
Journal Article
Open access
PDF file
ÇEÇağdaş Erdoğan
Çağdaş Erdoğan
DADerya Arı
Derya Arı
BYBayram Yeşil
Bayram Yeşil
KKKenan Koşar
Kenan Koşar
OCOrhan Coskun
Orhan Coskun
MYMahmut Yüksel
Mahmut Yüksel
Non-gastric upper gastrointestinal system polyps are detected rarely and mostly incidentally during upper gastrointestinal endoscopy. While the majority of lesions are asymptomatic and benign, some lesions have the potential to become malignant, and may be associated with other malignancies. Between May 2010 and June 2022, a total of 127,493 patients who underwent upper gastrointestinal endoscopy were retrospectively screened. Among these patients, those who had polyps in the esophagus and duodenum and biopsied were included in the study. A total of 248 patients with non-gastric polyps were included in this study. The esophageal polyp detection rate was 80.00/100,000, while the duodenal polyp detection rate was 114.52/100,000. In 102 patients (41.1%) with esophageal polyps, the mean age was 50.6 ± 15.1, and 44.1% (n = 45) were male. The most common type of polyps was squamous papilloma (n = 61, 59.8%), followed by inflammatory papilloma (n = 18, 17.6%). In 146 patients (58.9%) with duodenal polyps, the mean age of patients was 58.3 ± 16.5, and 69.8% (n = 102) were male. Brunner's gland hyperplasia, inflammatory polyp, ectopic gastric mucosa, and adenomatous polyp were reported to be the most prevalent types of polyps in the duodenum overall (28.1%, 27.4%, 14.4%, and 13.7%, respectively). It is crucial to identify rare non-gastric polyps and create an effective follow-up and treatment plan in the era of frequently performed upper gastrointestinal endoscopies. The epidemiological assessment of non-gastric polyps, as well as a follow-up and treatment strategy, are presented in this study.

30 April 2025 in Transplantation Proceedings
Verified
Journal Article
Closed access
MYMahmut Yüksel
Mahmut Yüksel
EYErdal Yekeler
Erdal Yekeler
KKKenarli Kenarli
Kenarli Kenarli
DKDiler Taş Kılıç
Diler Taş Kılıç
FBFatmanur Çelik Başaran
Fatmanur Çelik Başaran
ÇEÇağdaş Erdoğan
Çağdaş Erdoğan

20 May 2025 in Turkish Journal of Gastroenterology
Verified
Journal Article
Open access
MYMahmut Yüksel
Mahmut Yüksel
KKKenarli Kenarli
Kenarli Kenarli
FSFırathan Sarıaltın
Fırathan Sarıaltın
ESEmine Sena Sözen
Emine Sena Sözen
AAAHMET AKBAY
AHMET AKBAY
HKHASAN TANKUT KÖSEOĞLU
HASAN TANKUT KÖSEOĞLU
Background/Aims: Obesity is a growing global health challenge associated with increased morbidity and mortality. Intragastric balloon therapy has emerged as a minimally invasive alternative for weight management in patients unsuitable for bariatric surgery or as a bridging intervention. This study evaluates the efficacy, safety, and metabolic impacts of intragastric balloon therapy in a prospective cohort. Materials and Methods: A total of 65 patients underwent endoscopic intragastric balloon therapy between October 2023 and January 2025. Comprehensive baseline evaluations included body weight, body mass index, and computed tomography analysis of visceral and subcutaneous fat tissue thickness. Patients were followed up at 2 and 6 months post procedure. Statistical analysis was performed to assess weight loss, metabolic changes, and safety outcomes. Results: Of the initial cohort, 62 patients (mean age: 37.89 years; 75.4% female) completed the study. The median body weight decreased significantly from 104.5 kg pre procedure to 88 kg at 6 months (P < .001). Body mass index values similarly declined, with a mean reduction from 37.59 to 32.79 kg/m2 (P < .001). Significant decreases in subcutaneous and visceral fat tissue thickness were observed (P < .001 and P = .032, respectively). Only 1 patient (1.5%) required early balloon removal due to nausea, with no other major complications reported. Conclusion: Intragastric balloon therapy is an effective and safe intervention for short term weight loss, with significant reductions in adipose tissue. Further research is needed to evaluate its long-term efficacy and metabolic benefits. Cite this article as: Yüksel M, Kenarlı K, Sarıaltın F, et al. Six-month outcomes of endoscopic intragastric balloon therapy: A prospective single-center study. Turk J Gastroenterol. 2025;36(11):770-775.