High-grade histologic lesions in women with low-grade squamous intraepithelial lesion cytology from a region of Thailand with a high incidence of cervical cancer

ObjectiveTo evaluate the prevalence of and predictors for underlying significant lesions in women with low-grade squamous intraepithelial lesion (LSIL) smears.MethodsRecords were retrospectively reviewed for 208 women with LSIL who underwent colposcopy and histological evaluation from October 2004 through April 2009.ResultsMean age of the patients was 38.5 years. Forty-four (21.2%) women were nulliparous; 20 (9.6%) women were postmenopausal; 29 (13.9%) women tested positive for HIV. Thirty-three (15.9%) women were current users of combined oral contraceptive pills. The pathological results of initial colposcopic evaluations were: 63 (30.3%) with cervical intraepithelial neoplasia (CIN) 2–3; 62 (29.8%) with CIN 1; 4 (1.9%) with cervical cancer; and 79 (38.0%) with no epithelial lesion. Current use of combined oral contraceptive pills, a positive HIV test, and multiparity were significant independent predictors for high-grade disease.ConclusionApproximately one-third of women with LSIL in our population have underlying significant lesions. Current use of combined oral contraceptive pills, a positive HIV test, and multiparity are significant predictors for high-grade lesions.