Prevalence of high grade squamous intraepithelial lesion (HSIL) and invasive cervical cancer in patients with low grade squamous intraepithelial lesion (LSIL) at cervical pap smear.

Objective: To assess the prevalence and factors associated with a histologic diagnosis of high grade squamous intraepithelial lesion (HSIL) and invasive cervical cancer in patients with low grade squamous intraepithelial lesion (LSIL) cervical pap smear findings.

Methods: Medical records (including cytology reports, colposcopic impression, and pathologic results from cervical biopsy, endocervical curetting, cervical conization or hysterectomy) of 226 women with LSIL from conventional cervical pap smears during January 2001 to December 2005, who subsequently underwent colposcopic evaluation at our institution, were reviewed.

Results: Mean age of the patients was 39.