Cystic panfolliculoma of the scalp: report of a very rare case and brief review.

Panfolliculoma is an exceeding rare follicular benign neoplasm with differentiation toward both upper and lower segments of the hair follicle. In this report, we present a case of cystic panfolliculoma in the occipital region of the scalp of a 19-year-old female. We describe the histopathological and immunohistochemical features of the tumor and briefly discuss the differential diagnoses of this rare entity.