Browsing by Author "Haberal, A. Nihan"

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    Papanicolaou Smear Findings in Solid-Organ Transplant Recipients Compared With Normal Subjects According to the Bethesda 2001 System
    (2015) Atilgan, Alev Ok; Tepeoglu, Merih; Haberal, A. Nihan; Durukan, Elif; Kuscu, Esra; Haberal, Mehmet; 0000-0002-9894-8005; 0000-0002-3462-7632; 0000-0001-9852-9911; 0000-0001-8595-8880; 0000-0002-0992-6980; 0000-0002-8579-5564; 25894158; AAK-5222-2021; AAJ-8097-2021; AAK-4587-2021; AAK-3333-2021; AAI-8792-2021; AAJ-8621-2021
    Objectives: Solid-organ transplant recipients are at increased risk of developing cancer including cervical cancer compared with woman in the general population, mostly due to long-term immunosuppressive therapy. The Papanicolaou smear remains the primary method of screening cervical pathology including preinvasive and invasive lesions. The objective of this study was to evaluate Pap smear findings in solid-organ transplant recipients, determine the prevalence of abnormal smears, and compare these patients with the general population. Materials and Methods: We retrospectively examined 111 women patients who received liver or kidney transplant between January 1990 to December 2012 at Baskent University Ankara Hospital. Pap smear findings were compared with normal control patients matched for same age and technical procedure of cervical cytology. To selection of control patients, propensity score matching program was performed. All Pap smears were re-examined according to Bethesda 2001 criteria. Results: In 111 transplant patients, 2 patients (1.8%) had atypical squamous cells of undetermined significance, 8 patients (7.2%) had low-grade squamous intraepithelial lesion, 15 patients (13.5%) had Candida infection, 2 patients (1.8%) had Trichomonas vaginalis, 1 patient (0.9%) had herpes simplex infection, 13 patients (11.7%) had bacterial vaginosis, 15 patients (13.5%) had reactive changes due to inflammation, and 18 patients (16.2%) had atrophy. When we compared our results with the control group, there were statistically significant differences (P <= .05) between the 2 groups in epithelial cell abnormalities (low-grade squamous intraepithelial lesion), Candida infection, bacterial vaginosis, and atrophy. Conclusions: Pap smear screening potentially may help recognize cervical preinvasive and invasive lesions. The risk of developing cervical intraepithelial neoplasia is greater in transplant recipients because of immunosuppressive therapy. The incidence of low-grade squamous intraepithelial lesion was significantly greater in transplant recipients than the general population. Intensive follow-up with Pap smear in transplant recipients is important in the early detection of these lesions.
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    Potential Role of Increasing Number of Sections in Frozen Section Diagnosis of Ovarian Tumors
    (2016) Ayhan, Ali; Ozler, Ali; Dursun, Polat; Haberal, A. Nihan; 0000-0001-9852-9911; 27849334; AAK-4587-2021; AAJ-5802-2021
    Objective: To assess the accuracy of intraoperative frozen section of ovarian tumours at our institution and to identify the possible reasons for misdiagnosis. Study Design: Between January 2002 and August 2013, a total of 684 patients were included in the study. Frozen section diagnosis was compared with the final paraffin section diagnosis as the gold standard. The sensitivity, specificity, and positive and negative predictive values of frozen-section diagnosis were calculated for benign, borderline and malignant tumours. Clinicopathological parameters influenced by misdiagnosis were evaluated performing multivariate logistic regression analysis. Results: The overall accuracy was detected as 96.1%. Frozen-section diagnoses of 26 patients (3.8%) showed discordance. The specificity (99.7%) and PPV (99.4%) of frozen-section diagnosis was highest in the malignant category. In BOTs, diagnostic agreement was observed in 57 of 70 (81.4%) cases. The PPV (81.4%) was lowest for these patients. Tumour diameter of >= 10 cm (OR [95% CI]= 3.0 [1.1 to 8.2]; P=0.030) and mucinous histology (OR [95% CI]. 2.5 [1.0 to 6.2]; P=0.042) were significant predictors of misdiagnosis. With the increase in the number of sections, the accuracy rate of frozen section diagnosis was decreased. While not statistically significant (p=0.361). Conclusion: The number of sections is increased parallel to increase in tumor diameters. On the contrary, the diagnostic accuracy was no significantly increased with an increase in the number of sections. This discrepancy may be associated with falling tumor size per frozen section. A prospective study based on a certain tumour diameter per frozen section may better demonstrate the positive effect of the number of sections.