Type of Preparation: ThinPrep/ LBP Magnification: High Clinical History: Anal-rectal sample Interpretation: NILM: Negative for intraepithelial lesion or malignancy Explanatory Notes: Both nucleated and anucleated squamous cells are present. Anucleate squamous cells are frequently seen on anal cytology. These are usually obtained from sampling of the keratinized portion of the anal canal. When the sample is composed primarily of anucleate squames, the sample is unsatisfactory for evaluation.