Abstract

This study was conducted on female patients with different gynecological problems attending the gynecology out-patient departments of two tertiary care hospitals in Peshawar city of Khyber Pakhtunkhwa, Pakistan between August 2012 and October 2013. The 200 patients had an age range of 21-65 years. Smears were taken with cervical brushes and preserved in preservative medium and processed for manual liquid based cytology (MLBC) for Pap staining. Out of 200 collected samples, 30 samples were found inadequate on cytology. Of the remaining 170 samples, 164 (96.47%) were normal, 5 (2.94%) were of atypical squamous cells of unknown significance (ASCUS) and 1 (0.6%) was of high grade squamous intraepithelial lesion (HSIL). On PCR all the samples were positive for beta globin gene fragment including those reported inadequate on cytology. Out of the 5 ASCUS samples, 2 samples were positive for HPV, one each for HPV 16 and HPV 18, and the rest of the 3 samples were negative for HPV DNA. The 1 sample of HSIL was positive for HPV 16 on PCR. Out of 164 normal samples on cytology, only 1 sample was HPV 16 positive. So overall, 4 (2%) out of 200 samples were positive for HPV DNA, where 3 were HPV 16 (1.5%), and 1 was HPV 18 (0.5%) positive, and thus the ratio of infection with of HPV 16 to HPV 18 was 3:1 in the general population. In conclusion, PCR based HPV detection is a more sensitive method for screening of HPV infection than cytology as sample inadequacy does not affect the results. However, it can be combined with cytology methods in a HPV positive female to achieve the maximum results.

Highlights

  • Cervical cancer is the third most commonly occurring cancer (Mathers et al, 2010) among women Worldwide and is one of the major public health encumbrances

  • atypical squamous cells of unknown significance (ASCUS) (2.94%), no samples were reported to have lowgrade squamous intraepithelial lesion (LSIL) Before the reactions were cooled to room temperature, (0%) and 1 sample was reported have high grade squamous intraepithelial lesion (HSIL) (0.6%)

  • The mortality rate of cervical cancer in Pakistan is higher than the incidence rate as compared to various western countries

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Summary

Introduction

Cervical cancer is the third most commonly occurring cancer (Mathers et al, 2010) among women Worldwide and is one of the major public health encumbrances. The rates of attaining an HPV infection peak soon after the age when most young women become sexually active (Dunne and Markowitz, 2006). Primary prevention relies on the general awareness of women about risk factors and requisite changes in life style which is a main question in the developing countries where educational level of the women is yet to progress considerably (Nandini, 2012). In these countries the center of attention is secondary prevention through early cytologic detection and conventional Pap smear cytology happens to be the foundation of it. Around 30% cases (ACOG Committee, 2009) reported negative on Pap cytology test recently done turned out to have cervical cancer

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