Browsing by Author "Korkmaz, Huseyin"

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    Does the Presence of Endometrial Polyp Predict Colorectal Polyp ?
    (2016) Unler, Gulhan Kanat; Gokturk, Huseyin Savas; Toprak, Erzat; Erinanc, Ozgur Hilal; Korkmaz, Huseyin; https://orcid.org/0000-0003-0182-002X; https://orcid.org/0000-0002-2877-1232; https://orcid.org/0000-0003-1401-6356; 26897266; ABI-5902-2020; AAL-1268-2021
    Introduction: Endometrial polyps (EPs) and colorectal polyps (CPs) are common disorders and the incidence of both increase rapidly with aging. CPs are focal lesions and incidence increases with age. Aim: In this study, we aimed to analyze retrospectively the relationship between the EPs and CPs sharing similar clinical and genetic factors in their etiopathogenesis. Materials and Methods: This study was retrospectively performed between 2010 and 2013 and it included patients diagnosed to have eEPs. The study group and the control group consisted of patients who were diagnosed with or without EPs and who underwent colonoscopy at the same period. Results: The study group was formed by 57 patients with diagnosis of EP who underwent colonoscopy during the same period. The control group consisted of 71 patients without EP examined with colonoscopy. Among 128 patients assessed in this study, 24 were diagnosed with CPs, all of which were adenomatous polyps smaller than 1 cm. No hyperplastic or inflammatory polyps were diagnosed. While 18 of 57 patients with EPs had CPs, 6 of 71 control subjects had CPs. Hence, the risk of having CP was 5 times greater in patients with EP compared to those without (P < 0.05). Conclusion: The present study demonstrated that the prevalence of CPs increased significantly in postmenopausal patients with EPs. Recommending colonoscopy to these patients irrespective of age may be beneficial for detecting more CPs and preventing colorectal cancer.
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    Is there any association between colonic polyps and gastric intestinal metaplasia?
    (2016) Unler, Gulhan Kanat; Ozgur, Gulsum Teke; Gokturk, Huseyin Savas; Korkmaz, Huseyin; Erinanc, Ozgur Hilal; 27210777
    Background/Aims: Chronic gastritis progression is a multistep process of atrophy, intestinal metaplasia (IM), and dysplasia, which may lead to invasive carcinoma. In this study, we identified an association of colonic polyps with gastric IM in patients undergoing colonoscopy. Materials and Methods: This retrospective case-control, cross-sectional study was conducted in a tertiary-care institution in Turkey. Pathology and endoscopy reports were reviewed. The study group comprised 400 patients with colonic adenomatous polyps, and the control group comprised 360 patients without colonic adenomatous polyps on colonoscopy. Results: The risk of gastric IM was 1.42-fold higher in the study group (p<0.05). The risk of IM in patients aged >= 50 years with colonic polyps was 3.35-fold higher than in those aged <50 years (p<0.05). The risk of Helicobacter pylori infection in the study group was 1.07-folder higher than that in the control group (p<0.05). H. pylori infection prevalence was higher only in patients with high-grade colonic polyp dysplasia (p<0.05). There were no statistically significant differences in the proportion of incomplete IM between the groups (p<0.05). Conclusion: This study observed increased rates of gastric IM with colonic polyps. An increased risk of gastric IM was associated with higher grades of polyp dysplasia.
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    Noninvasive Estimation of Disease Activity and Liver Fibrosis in Nonalcoholic Fatty Liver Disease Using Anthropometric and Biochemical Characteristics, Including Insulin, Insulin Resistance, and 13C-Methionine Breath Test
    (2015) Korkmaz, Huseyin; Unler, Gulhan K.; Gokturk, Huseyin S.; Schmidt, Wolfgang E.; Kebapcilar, Levent; 0000-0003-0182-002X; 26049707
    ObjectiveThe purpose of this study was to noninvasively estimate disease activity and liver fibrosis in patients with nonalcoholic fatty liver disease (NAFLD) using anthropometric and biochemical characteristics and the C-13-methionine breath test (MeBT).MethodsA total of 164 patients with histologically proven NAFLD and 56 healthy controls were included in the study. Anthropometric and biochemical analyses and the MeBT were performed on all patients and controls.ResultsBMI; waist circumference; waist-hip ratio; transaminase, lipid, -glutamyl transpeptidase (GGT), glucose, and insulin levels; and insulin resistance were significantly higher in patients with NAFLD than in controls. The GGT level and the MeBT were independent predictors of nonalcoholic steatohepatitis (NASH). Fibrosis was correlated with GGT, bilirubin, cholesterol, and insulin levels, and the MeBT, but the test was the only independent predictor of significant fibrosis. Patients with simple steatosis had similar MeBT values as controls. The MeBT values were significantly lower in NASH and NASH-cirrhosis patients (P<0.001) compared with simple steatosis patients and controls. Patients with advanced fibrosis (F2-3) had significantly lower MeBT values than patients with mild fibrosis (F0-1; P<0.001). The area under the receiving operating characteristic curve for NASH and advanced fibrosis was estimated to be 0.95 in the total cohort.ConclusionThis study indicates that anthropometric and biochemical parameters are insufficient for estimating the presence of NASH or the fibrosis stage. However, the MeBT is a suitable noninvasive method for accurately predicting which patients suffer from simple steatosis, NASH, or NASH-cirrhosis.
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    Routinely Evaluated Clinical Assays and Laboratory Tests [Real Test] And Fibrosis Stages of Chronic Hepatitis B and C
    (2014) Bugdaci, Mehmet Sait; Korkmaz, Huseyin; Demir, Ali; Biyik, Murat; Temel, Tuncer; Gokturk, Huseyin Savas; Ozakyol, Aysegul; Hatemi, Ibrahim; Baysal, Birol; Karaca, Cetin; Senturk, Hakan; 25417616
    Background/Aims: To provide a new mathematical formula to predict liver fibrosis in patients with chronic viral hepatitis. Materials and Methods: Patients with chronic hepatitis B and C who underwent liver biopsy at different centers were included in this study. Chronic hepatitis B was defined as immunopositivity for the hepatitis B surface antigen for at least 6 months, and chronic hepatitis C was defined as positivity for HCV RNA for at least 3 months. The histological features were evaluated by the histological activity index and fibrosis. Results: In total, 1299 patients were included in the study. The distribution and the mean of the parameters of the patients were as follows: 1009 patients with chronic hepatitis B with a mean age of 45 +/- 13/years [emale/male (F/M)=47.5/52.5%] and 290 patients with hepatitis C with a mean age of 52 +/- 10.3/years [F/M=61/39%]. When the cut-off value of the REAL TEST formula"[(age x pT x AST)/(PLT/1000)]/100" in patients with hepatitis B was determined to be >= 1.37, it was found that it could predict fibrosis with 79% specificity, 78% sensitivity, 85% negative predictive value (NPV), and 70% positive predictive value (PPV) (area under the curve (AUC)=0.852, 95% CI: 0.82-0.87). When the cut-off value of the REAL TEST formula in patients with hepatitis C was determined to be >= 1.99, it was found that it could predict significant fibrosis with 87% specificity, 90% sensitivity, 94.4% NPV, and 79.4% PPV (AUC: 0.95, 95% CI: 0.93-0.98) Conclusion: The REAL TEST formula results correlated with the pathological findings and may be a useful method for the evaluation of patients with chronic hepatitis B and C.