Papillary craniopharyngioma. The epithelium is mature squamous forming pseudopapillae downward into the underlying tissues. (Reprinted from Karavitaki N, Cudlip S, Adams CBT, Wass JAH. Craniopharyngiomas. Endocr Rev, 2006; 27: 371–97 (1) with permission. Copyright 2006, The Endocrine Society.) (See also Fig. 2.4.2.2)