Type of Preparation: Conventional Magnification: High Clinical History: 34 year old female Interpretation: Atypical endocervical cells, NOS Cytomorphologic Criteria: Cells are characterized by disordered arrangement and enlarged round or oval nuclei with occasional nucleoli. Explanatory Notes: Atypical endocervical cells typically show features that exceed those of obvious reactive/reparative changes but do not fulfill the criteria for endocervical adenocarcinoma in situ. Follow-up: Adenocarcinoma in situ (AIS)