Type of Preparation: Conventional Magnification: High Interpretation: Endocervical adenocarcinoma in situ (AIS) Cytomorphologic Criteria: Gland-like cluster of cells showing crowded, overlapping oval nuclei and granular, evenly distributed chromatin. Cytoplasm is finely vacuolated with some columnar shapes. Smear background is clean. Follow-up: Endocervical adenocarcinoma in situ