100 consecutive cases of papillary cancer - case 033 (cytologic picture 6)

Pap-smear, 1000x.   Atypical follicular cells are located in irregular groups with nuclear overlapping. It would be a very difficult task to give cytological diagnosis on this smear. We think that this pattern corresponds to atypia of unknown significance. The nuclear atypia does not fulfill the criteria of a suspicion of follicular or papillary carcinoma.