Low-grade squamous intraepithelial lesions (LSIL)

Low-grade squamous intraepithelial lesions (LSIL) are mildly abnormal cells found on a Pap smear. These abnormal cells do not usually develop into cancer.

LSIL is often caused by infection with the human papillomavirus (HPV). Some HPV causes genital warts.

Author:	Sandy Jocoy, RN	Last Updated: January 5, 2009
Medical Review:	Joy Melnikow, MD, MPH - Family Medicine Kevin Holcomb, MD - Gynecologic Oncology
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