Type of Preparation: Conventional Magnification: High Clinical History: Left: 82 year old woman with postmenopausal spotting Interpretation: Atypical endometrial cells Cytomorphologic Criteria: Three-dimensional groups of small cells with hyperchromatic nuclei, small nucleoli and occasionally vacuolated cytoplasm. Explanatory Notes: Atypical endometrial cells may be associated with the presence of a wide variety of processes, including polyps, chronic endometritis, hyperplasia, and carcinoma. Follow-up: Endometrial hyperplasia