title: A rare cutaneous adnexal neoplasm: cystic panfolliculoma.
abstract: A cystic panfolliculoma is a benign follicular neoplasm which recapitulates several portions of the hair follicle. The patient was a 64-year-old Caucasian female who presented with a new growth on her right forearm. The lesion had slowly enlarged over the previous 11 months. She complained of it bleeding on several occasions and being very tender when touched. On exam was an 8 mm firm pink papule which appeared slightly eroded. The growth was excised in clinic. Histology showed a well-circumscribed neoplasm with foci of matrical, infundibular, inner and outer root sheath differentiation. A BerEp3 labeled focal areas of follicular germinative differentiation at the periphery of the proliferation. The lesion was narrowly excised in the available planes of section. The surgical site healed well and there are no residual symptoms from the tumor.
authors.affiliation: Department of Dermatology, University of Missouri School of Medicine, Columbia, MO, USA.
authors.forename: Brett
authors.initials: B
authors.lastname: Neill
authors.affiliation: Department of Dermatology, University of Missouri School of Medicine, Columbia, MO, USA.
authors.forename: Colby
authors.initials: C
authors.lastname: Bingham
authors.affiliation: Department of Dermatology, University of Missouri School of Medicine, Columbia, MO, USA.
authors.forename: Kara
authors.initials: K
authors.lastname: Braudis
authors.affiliation: Department of Dermatology, University of Missouri School of Medicine, Columbia, MO, USA.
authors.forename: Susan
authors.initials: S
authors.lastname: Zurowski
mesh_terms: D001132:Arm / Q000473:pathology; D005260:Female; D006201:Hair Diseases / Q000473:pathology*; D018859:Hair Follicle / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D018294:Neoplasms, Adnexal and Skin Appendage / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*
keywords: adnexal neoplasm; adnexal neoplasms; cutaneous neoplasm; dermatology; dermatopathology