title: Pilonidal sinus-like "ancient" cellular blue nevus.
authors.affiliation: Gaetano Rummo General Hospital, Benevento, Italy gerardo.ferrara@libero.it.
authors.forename: Gerardo
authors.initials: G
authors.lastname: Ferrara
authors.affiliation: Azienda Sanitaria Regione Molise, S. Timoteo Hospital, Termoli, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Travaglini
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D018329:Nevus, Blue / Q000473:pathology*; D012445:Sacrococcygeal Region; D012878:Skin Neoplasms / Q000473:pathology*