Ferhat Cetin

Dr. Ferhat Cetin

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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28 January 2025 in Medicina
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Ilkan KayarIlkan Kayar
Ilkan Kayar
GGGoksu Goc
Goksu Goc
FCFerhat Cetin
Ferhat Cetin
ÖBözer Birge
özer Birge
Background and Objectives: The aims of this study were to assess the impact of smoking on cervical histopathology in women with high-risk HPV types 16 and 18 (the most common types) utilizing comprehensive clinical data and to conduct a risk analysis based on smoking pack-years. Materials and Methods: Between 2022 and 2024, 1048 high-risk HPV-positive women aged 25 to 65 years were categorized into two groups: smokers and non-smokers. Data acquired from a histopathological examination of samples collected during a colposcopic evaluation of these women were compared individually regarding clinical and demographic factors, specifically age, gravida, parity, and alcohol consumption. Subsequently, the impact of prolonged and excessive smoking on histopathological cellular changes was assessed in women with the same characteristics. A case–control study was performed on 312 smokers and 312 non-smokers following mutual matching. Results: The women were matched one-to-one regarding gravida, parity, and alcohol consumption. Subsequently, they were paired within a ±2-year age range. The mean age of the smoker group was 47.1 ± 8.8, while that of the non-smoker group was 47.2 ± 8.5 (p: 0.904). In all cases of high-risk HPV positivity, the rate of normal cervical cytological results was 14% in women who smoked and 29% in women who did not smoke. The LGSIL, HGSIL, ASC-H, and AGC-NOS rates were elevated in the smoker group, and a statistically significant difference was observed between the two groups in terms of abnormal cervical cytological results (p < 0.001). After a colposcopic biopsy, the smoker group exhibited higher rates of HGSILs, LGSILs, AGC-NOS, and CIS pathological lesions (28% vs. 23%), whereas the non-smoker group exhibited higher rates of chronic cervicitis (23% vs. 16%). However, no statistically significant difference was found between the two groups (p: 0.092). In a comparison of endocervical curettage (ECC) samples, it was observed that the HGSIL, CIS, and AGC-FN rates in the smoker group were almost the same as those in the non-smoker group. However, the LGSIL histopathology results (32% vs. 18%) were higher, and the rate of negativity with no pathology was higher in the non-smoker group (72% vs. 59%). A statistically significant difference in ECC histopathology was noted between the two groups (p < 0.001). An ROC analysis conducted between smoking pack-years and the colposcopic and endocervical curettage biopsy results revealed that the cutoff value for the colposcopic abnormal histopathological results increased, with 40% sensitivity and 76% specificity above 20 pack-years (AUC: 0.592 and p: 0.025). Additionally, the abnormal histopathology rates for endocervical curettage exhibited 81% sensitivity and 32% specificity above 13 pack-years (AUC: 0.586 and p: 0.008). The rate of abnormalities in the colposcopic biopsy results was 2.19 times higher for individuals with over 20 pack-years, and the rate of abnormalities in the ECC results was 2.08 times higher for those with over 13 pack-years; additionally, statistically significant results were obtained (p-values of 0.027 and 0.008, respectively). Conclusions: The most important cause of neoplastic changes in the cervix uteri is high-risk HPV infection, with evidence indicating that prolonged excessive smoking significantly exacerbates the persistence and progression of HPV infection, thereby influencing neoplastic changes in the cervix uteri. It is crucial for women to cease smoking in order to eradicate HPV infection from the body.

21 October 2024 in BMC Women's Health
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FCFerhat Cetin
Ferhat Cetin
IKİlKan Kayar
İlKan Kayar
ÖBÖzer Birge
Özer Birge
GGGoksu Goc
Goksu Goc
This study aims to examine cases identified with endometrial polyp and carcinoma originating from polyps in patients presenting with gynaecological problems, and to highlight the significance of risk factors contributing to malignancy. The study comprised 203 patients who visited our clinic between January 2019 and 2024 with various gynaecological problems and were identified with endometrial polyps after a clinical, radiographic, and laboratory assessment. We retrospectively analysed data from 191 benign endometrial polyps and hyperplasia without atypia and 12 patients with endometrial polyps and underlying endometrial hyperplasia with atypia and/or endometrial carcinoma, diagnosed histopathologically after hysteroscopic resection, retrieved from our hospital's electronic archive system. Two hundred three participants were tested in the study, with 191 classifieds with benign tumours and 12 diagnosed with malignant tumours and atypical endometrial hyperplasia (premalignant). Cases were chosen according on consistent criteria for age, BMI, gravida, parity, abortion, educational level, smoking habits, operation history, and co-morbidities. After determining the sample size for the malignant group, patients from the control group were selected to be included in the study. Initially, patients with similar age and BMI distributions were included into the study. Next, the cases were analysed for similarities in gravida, parity, and abortion parameters, and those that matched were chosen. Following this step, the educational status was compared for resemblance, and examples with matching educational status were chosen. Consequently, the study covered a total of 34 patients, with 12 identified with malignant tumours and atypical endometrial hyperplasia (premalignant) and 22 with benign tumours. Two groups of cases were diagnosed with endometrial polyp, and risk factors that may cause the development of endometrial polyp and underlying carcinoma: age, gravida, parity, abortion, education level, smoking, previous operation history, comorbidity, gynaecological complaints, fasting blood sugar, CRP values, haemoglobin, and haematocrit were evaluated in terms of endometrial polyp sizes, endometrial thickness level, and endometrial polyp localization. By examining the pathological risk factors of these cases, particularly during the premenopausal period, the goal is to predict endometrial cancer, the most prevalent gynaecological cancer in women, along with its antecedents, and implement preventive measures proactively. Age, BMI, gravida, parity, number of abortions, educational status, smoking status, operation history, co-morbidity, and complaint variables did not exhibit a statistically significant difference between the groups (p > 0.05). It was revealed that the FBG level, CRP level, Polyp length and Endometrial thickness level of the malignant group were statistically significantly higher than the benign group (p < 0.01) (p < 0.05). Upon analysing the FBG distribution among groups, it is noted that the ODDS ratio is 10.20 for FBG values of 122.5 and above (95% CI: 1.97 – 52.78). Upon analysing the CRP distribution by groups, it is noted that the ODDS ratio is 231 for CRP values of 9.7 and above (95% CI: 13.15 – 4058.67). Upon analysing the distribution of Polyp length based on groups, it was determined that the ODDS ratio is 13.5 for Polyp lengths of 2.25 and above (95% CI: 2.47 – 73.71). Upon analysing the distribution of EM thickness based on groups, it is shown that the ODDS ratio is 5.25 for EM thicknesses of 11 and above (95% CI: 1.09 – 25.21). Endometrial polyps are common benign growths that are typically not seen as cancer precursors but may be linked to cancer in people with advanced age. It is vital to remember that in cases of endometrial polyps, variables such as increasing polyp length, endometrial thickness, fasting glucose level, and elevated CRP levels are significant risk factors for the development of cancer associated with polyps.


6 August 2024 in Medicina
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Journal Article
Open access
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FCFerhat Cetin
Ferhat Cetin
Ilkan KayarIlkan Kayar
Ilkan Kayar
GGGoksu Goc
Goksu Goc
ÖBözer Birge
özer Birge
Background and Objectives: The purpose of the present study was to compare the results of colposcopic biopsies in patients with breast cancer and those who tested positive for HPV in cervix uteri cytological screenings, with a control group of HPV-positive individuals without breast cancer. Additionally, through this study, we aimed to investigate the impact of tamoxifen treatment, an anti-oestrogen drug used following breast cancer treatment, on histopathological changes. Breast cancer is the most common type of cancer and cause of death in women worldwide. Cervical cancer ranks as the second most prevalent form of cancer among women globally, with prevalence rates ranking just behind those of breast cancer. Human papillomavirus (HPV) positivity is a requirement for the development of cervical cancer, although it is not the sole factor responsible. Materials and Methods: A comparison was made between the histopathological results of 52 patients diagnosed with breast cancer, who tested positive for HPV in routine cervical cytological screenings and underwent colposcopic biopsy, and 230 cases without any abnormalities. A study was conducted to compare healthy individuals between the ages of 30 and 65 who were diagnosed with breast cancer and those who did not have breast cancer. The participants underwent HPV screening as part of the national cervical cytology screening programme. Results: The average age of those diagnosed with breast cancer was 46.73 ± 7.54; in comparison, the average age of participants in the control group was 47.49 ± 7.95. There was no statistically significant difference in age between the two groups (p: 0.530). A total of 51 cases (98.1%) of breast cancer were found to have actively used the anti-oestrogen drug tamoxifen for a duration ranging from at least 6 months to 5 years. One patient (1.9%) in the breast cancer group did not use tamoxifen. During routine cervical cytological screenings, it was observed that both breast cancer cases and healthy cases tested positive for HPV. The most commonly detected types of HPV in both groups were HPV 16 and 18, with rates of 73.1% noted in the breast cancer group and 92.6% noted in the healthy group, results consistent with the rates found in the general population. HPV 16 was found in 58.7% of participants in the control group and 42.3% of participants in the breast cancer group. There was a statistically significant difference between the two groups (p: 0.032). There was no statistically significant difference observed between the two groups in terms of normal, high-grade cervical intraepithelial lesions (HGSILs); low-grade cervical intraepithelial lesions (LGSILs); and chronic cervicitis histopathological lesions based on colposcopic and endocervical biopsy results, smear cytology, and HPV results (p-values of 0.913 and 0.877, respectively). Conclusions: Our study results indicate that tamoxifen treatment, an anti-oestrogen drug administered for chemoprevention purposes in the management of breast cancer, does not lead to an increase in abnormal histological changes in the cervix uteri. In all cases of breast cancer, gynaecological examination and cervical cytological screening should be advised.

16 January 2026 in Genel Tıp Dergisi
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Journal Article
Closed access
Ilkan KayarIlkan Kayar
Ilkan Kayar
FCFerhat Cetin
Ferhat Cetin
MÇMUSTAFA ÇETİN
MUSTAFA ÇETİN
ÖBözer Birge
özer Birge
Aims: Women who have undergone subtotal hysterectomy remain at risk for HPV infection and cervical cancer due to the preservation of cervical structure. This study aimed to assess the efficacy of HPV-based cervical cancer screening following subtotal hysterectomy and the rates of patient compliance. Methods: A group of 284 women who underwent subtotal hysterectomy was evaluated, and data on HPV testing, cytology, and demographics was collected. HPV positivity, genotype distribution, and cytological results were examined. Results: HPV positivity was observed in 14.4% of participants, with genotypes 16 and 18 being the most common types. Cytological abnormalities were identified in 21% of HPV-positive cases. The screening compliance rate was determined at 72.5%. Conclusions: HPV-based screening in women with cervical preservation following subtotal hysterectomy is a crucial and essential approach to mitigate cervical cancer risk. It is recommended to establish particular protocols for this group under national screening programs.

16 December 2025 in Interdisciplinary Medical Journal
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Journal Article
Closed access
Ilkan KayarIlkan Kayar
Ilkan Kayar
FCFerhat Cetin
Ferhat Cetin
MÇMUSTAFA ÇETİN
MUSTAFA ÇETİN
ÖBözer Birge
özer Birge
Objective: To compare the demographic characteristics, operative outcomes, laboratory findings, and complications among laparoscopic (n=254), abdominal (n=233), and vaginal (n=334) hysterectomy methods. Methods: A retrospective analysis of 821 patients undergoing hysterectomy was conducted. Groups were compared for age, BMI (body mass index), operative time, intraoperative blood loss, postoperative hemoglobin drop (ΔHb), length of hospital stay, complication rates, wound infections, and presence of malignancy. Statistical significance was assessed with p < 0.05, and post-hoc analyses were adjusted accordingly. Results: Mean age differed significantly among groups (p < 0.001), notably between laparoscopic (48 ± 6 years) and vaginal (50 ± 6 years) groups (adj. p < 0.001); BMI showed no significant difference (p = 0.089). Operative time was longest in the laparoscopic group (95 ± 14 min, p < 0.001, all post-hoc adj. p < 0.001). Blood loss was highest in the abdominal group (253 ± 67 cc) compared to laparoscopic (123 ± 40 cc) and vaginal (135 ± 37 cc) (p < 0.001, adj. p < 0.001). The postoperative hemoglobin decrease was greatest in the abdominal group (–2.73 ± 1.54 g/dL) versus laparoscopic (–1.58 ± 1.11 g/dL) and vaginal (–1.73 ± 0.97 g/dL) (p < 0.001, adj. p < 0.001). Hospital stay was shortest after vaginal hysterectomy (2.0 ± 0.5 days) and longest after abdominal (3.1 ± 0.8 days) (p < 0.001, adj. p < 0.001). Complication rate was highest in the abdominal group (16.3%), including wound infection (10.3%) (p < 0.001). Malignant pathology was more frequent in the abdominal group (9.0%) compared to vaginal (3.3%) (p = 0.013). Conclusion: Abdominal hysterectomy is associated with greater blood loss, larger hemoglobin drop, longer operative time and hospital stay, and higher complication and malignancy detection rates, whereas vaginal hysterectomy offers the shortest hospitalization. These findings underscore the importance of surgical method selection based on perioperative risk profiles.