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Anal Cancer Screening by Modified Liquid-Based Cytology in an HIV Clinic

  • Patarapadungkit, Natcha ;
  • Koonmee, Supinda ;
  • Pasatung, Emorn ;
  • Pisuttimarn, Pornrith ;
  • Mootsikapun, Piroon
  • Published : 2012.09.30

Abstract

This study aimed to screen for anal cancer and to determine its cytomorphology using liquid-based cytology (LBC) with specimens preserved in 95% ethyl alcohol. Anal swabs were collected for cytological examination from 177 adult, HIV-infected patients. After collection, sample slides were reviewed and classified according to their cytomorphology using the modified Bethesda 2001 system. An abnormal anal Pap smear was found in 26.0% of the patients. The diagnoses were: 66.7% negative for intraepithelial lesions (NIL), 14.1% with atypical squamous cells of undetermined significance (ASC-US), 10.7% (19) with low-grade squamous intraepithelial lesions (LSIL), and 1.13% with high-grade squamous intraepithelial lesions (HSIL). The cytological evaluation was an unsatisfactory result only with 6.67%. The present modified LBC using 95% ethyl alcohol as the preservative could thus be used for anal cancer screening. The number of SILs in Thai HIV-infected patients is lower than that in Western countries. We found anal cytology a satisfactory tool for early screening and detection of anal dysplasia commonly found in high-risk, HIV-infected patients.

Keywords

Anal carcinoma;HIV;screening;cytology

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Cited by

  1. Prevalence of Abnormal Anal Cytology in HIV-Infected Women: a Hospital-Based Study vol.15, pp.15, 2014, https://doi.org/10.7314/APJCP.2014.15.15.6405
  2. Screening for Anal Cancer in Women vol.19, pp.1089-2591, 2015, https://doi.org/10.1097/LGT.0000000000000117
  3. The value of a transformation zone component in anal cytology to detect HSIL vol.124, pp.8, 2016, https://doi.org/10.1002/cncy.21730
  4. Incidence of Anal Dysplasia in a Population of High-Risk Women vol.21, pp.4, 2017, https://doi.org/10.1097/LGT.0000000000000328