title: Bilateral perianal inflammatory verrucous porokeratosis (Porokeratosis ptychotropica)
authors.forename: N
authors.initials: N
authors.lastname: Stone
authors.forename: R
authors.initials: R
authors.lastname: Ratnavel
authors.forename: J D
authors.initials: JD
authors.lastname: Wilkinson
mesh_terms: D000328:Adult; D001003:Anal Canal; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009508:Nevus, Pigmented / Q000175:diagnosis*; D010392:Pemphigus / Q000175:diagnosis; D017499:Porokeratosis / Q000175:diagnosis*; D012871:Skin Diseases / Q000175:diagnosis*