F2Ch24 (P1112): A column of basal cells (a blastomatous component) of germinative type projects from the lower margin of a portion of the tumor. The projection is in continuity with the inconstant portion of a miniaturized follicle. (see F1 & F2 of Ch25). In consideration of the basic nature of the tumor and the location of the nest of germinative basal cells, the nest of basal cells might be thought of as a “bulge” in a germinative phase.
In chapters 39a, 39b, & 39c, the features of sclerosing entrapment, as encountered in the follicular hamartomas of the butterfly area of the face, are discussed. Also in chapter 39a (F5-7), a variant feature, lymphoepithelial change, is discussed.