Correlation Between Cervical Cytology and Histopathological Cervical Biopsy Findings According to the Bethesda System / Stepen Korelacije Cervikalne Citologije Po Bethesda Klasifikaciji Sa Patohistološkim Nalazima Cervikalne Biopsije

Abstract

The Pap test (Pap smear) is a morphological cytodiagnostic test that reveals premorbid and early stages of cervical cancer through the use of cervicovaginal cytology. The present study was conducted at the Department of Gynecology and Obstetrics, Clinical Center Kragujevac, from January 01, 2013, to December 1, 2013, with patients who were part of the national screening program and who used a secondary cytological examination (Pap test) performed using a conventional method. The patients were grouped according to the results of a Pap smear and histopathological findings. The classification of cytological smears was performed in accordance with the Bethesda system. The hypotheses established in this study were statistically tested. The greatest number of cytological findings was NILM. However, the most frequent abnormal cytological findings in terms of percentage were ASC-US. After secondary cervical findings of 8.1% of the total number of women, biopsies were performed. In 68.57% of the biopsies performed, CIN was present in all of them, with the most frequent ones being LSIL (50.6%), HSIL (10.4%) and CA Invasiva (0.5%). This study, using the X2 test, confirmed that cervical cytology and biopsy results are dependent features (sig. = 0.036), between which there is a medium association (Cramer’s V = 0.176). In the ASC-US cytological findings, small percentages of CIN1 and CIN2 were detected. Cervical cytology in this study presented high sensitivity, specificity, positive and negative predictive value. As a relatively inexpensive, painless and easily approachable method, cervical cytology fully substantiates its implementation in diagnostic procedures as well as in organized screening programs.

Cervical Cytology–Histology Correlation Based on the American Society of Cytopathology Guideline (2017) at the Russian National Medical Research Center for Obstetrics, Gynecology, and Perinatology

“…For the cytology method, they reported a sensitivity of 87.3%, a specificity of 96.86%, a positive predictive value of 63.95%, total agreement in 41.09%, minor discrepancies in 45.54%, major discrepancies in 12.87%, and minor variance in 0.50%. Of note, both minor and major discrepancies were detected in many more cases in the Serbian cohort than in our cohort [ 33 ].…”

“…Error analysis: Some previous papers reported a sampling discrepancy, a screening discrepancy or an interpretive discrepancy. Unfortunately, the approach focuses only on expected individual failures [ 33 , 40 ]. In this study, we tried to analyze all of these errors.…”