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Cervical Cytology TBS Classification

Abnormal Epithelial Cells
Squamous cells    divided into two categories: Atypical squamous cells of undetermined significance (ASC-US) and Atypical squamous cells-cannot exclude HSIL (ASC-H)
Low-grade squamous intraepithelial lesion (LSIL), including HPV infection/CIN 1
High-grade squamous intraepithelial lesion (HSIL), including CIN 2 and 3
Glandular Epithelium
Atypical (AGC), tending towards neoplasia
Adenocarcinoma in situ (cervical canal)
Adenocarcinoma (cervical canal, endometrium, extrauterine)
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