Type of Preparation: ThinPrep/ LBP Magnification: High Clinical History: 46 year old woman, routine exam, menses at the time of office visit Interpretation: Endometrial cells are present in a woman >= 40 years of age. Negative for squamous intraepithelial lesion. (See Note) Note: Endometrial cells correlate with the menstrual history provided. Cytomorphologic Criteria: Three-dimensional cluster of cells. The nuclei are larger than the endometrial nuclei seen on conventional smears. Nuclei appear more pleomorphic in size and appear darker than conventional smears. Explanatory Notes: In liquid-based preparations, shed/menstrual endometrium may show more pleomorphism than is seen in conventional smears. Follow-up: Two follow-up Pap tests have been normal