Atypical Squamous Cells (ASC) of the Cervix

Atypical squamous cells (ASC) are abnormal cells found on a Pap test, but the reason for the abnormalities is not known. The causes of ASC include infection and inflammation.

ASC is further classified as:

ASC of undetermined significance (ASC-US).
ASC but cannot exclude high-grade squamous intraepithelial lesion (HSIL) (ASC-H).

Current as of: May 12, 2017

Author: Healthwise Staff

Medical Review: Adam Husney, MD - Family Medicine & Sarah A. Marshall, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & Kevin C. Kiley, MD - Obstetrics and Gynecology

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