Fig. 1From: A large helmet-shaped proliferating trichilemmal tumor of the scalp: Is definitive radiotherapy the treatment? A case reporta Sections showing a well-circumscribed deep dermal tumor (arrow) (hematoxylin and eosin, × 40). b The tumor is composed of expansile lobules of squamous cells separated by loose stroma (hematoxylin and eosin, × 400). c There was evidence of abrupt keratinization in the center of some of the lobules, and ghost cells (arrows) are also seen (hematoxylin and eosin, × 100). d The cells did not show any atypia or mitotic activity (hematoxylin and eosin, × 400)Back to article page