Anal and cervical abnormality in women--prediction by human papillomavirus tests

International Journal of Cancer. Journal International Du Cancer
M MelbyeJ M Palefsky

Abstract

A total of 151 women at risk of human immunodeficiency virus infection were investigated, to study the strength of the association between cervix and anus regarding the presence of HPV and cytological abnormality. An equal percentage of women had abnormal cervical (12.2%) and anal (12.1%) Papanicolaou smears. HPV measured by PCR was detected in 93.3% of cervical squamous intraepithelial lesions (SIL) compared to 49.1% of normal cervical cytologies, and in 100% of anal SIL and 67.4% of normal anal cytologies, respectively. After controlling for HPV-PCR status, immunodeficiency, as measured by a low CD4+ count and HIV positivity, increased the detection of cervical and to some extent anal squamous intraepithelial lesions (SIL). We evaluated how precisely an HPV test could predict cervical disease and found that the HPV-PCR test was slightly more sensitive than the HPV-hybrid capture (HC) test (PCR: 93.3% vs. HC: 88.9%), whereas the HC test was significantly more specific (83.6% vs. 50.9%), and with a much higher positive predictive value (43.2% vs. 20.6%). Similar results were obtained for anal SIL. HIV positivity increased sensitivity, lowered specificity and increased the positive predictive value of the tests. A diagnosis of c...Continue Reading

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