Diagnostic Accuracy of Intraoperative Frozen Section and Causes of Error in Ovarian Epithelial Tumors: An Institutional Experience
Abstract:
Background
Ovarian cancer is the second most common type of female genital tract malignancy. Treatment planning differs for benign, borderline, and malignant subtypes of surface epithelial tumors and depends on accurate histopathological diagnosis. The aim of this study is to determine the accuracy and causes for error in intraoperative diagnosis of ovarian surface epithelial tumors.
Methods
In this retrospective study, we analyzed all cases of ovarian surface epithelial tumors referred to the Pathology Department of our hospital from April 2010 to December 2015. We considered the final diagnosis as the gold standard and determined the accuracy, sensitivity, specificity, positive predictive value, negative predictive value, underdiagnosis and overdiagnosis for each group of benign, borderline, and malignant tumors. An expert pathologist blinded to the diagnosis reviewed patients’ frozen and permanent slides and categorized causes of error into misinterpretation, sampling, and technical errors.
Results
We assessed 220 patients’ slides (96 benign, 66 borderline, and 58 malignant tumors). The accuracy of the frozen section was: 98% in benign, 80.3% in borderline and 67.2% in malignant tumors. The frozen sections had a sensitivity of 97.9% for benign tumors and a sensitivity of 67.2% and specificity of 100% for malignant tumors. Borderline tumors had a sensitivity of 91% and specificity of 88.4%. Mucinous borderline tumors comprised the more frequent uncertain and underdiagnosed cases. The main cause for error in this group was sampling error. In malignant neoplasms, 15.5% were reported to be at least borderline. Technical issues were the cause of difficulty in interpretation. In the benign category, cystadenofibroma could be misinterpreted as a borderline malignancy.
Conclusion
Frozen section is an accurate, specific method for diagnosis of benign and malignant tumors. In the borderline category, the results should be interpreted with caution.
Language:
English
Published:
Middle East Journal of Cancer, Volume:8 Issue: 3, Jul 2017
Pages:
155 to 160
magiran.com/p1710207  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!