title: Plaque-like osteoma cutis with transepidermal elimination.
abstract: Osteoma cutis is a rare lesion that consists of the presence of bone tissue within the dermis and/or hypodermis. It may be classified as primary osteoma cutis, when bone tissue develops in the skin without any pre-existing lesion and secondary osteoma cutis, which is more frequent and occurs when osseous tissue develops on a pre-existing lesion. We present a case of primary plaque-like osteoma cutis involving the scalp, left forehead and left cheek, which appeared in an adult male. Histopathological study showed several islands of mature osseous tissue involving the full thickness of the dermis. In some areas, there was also transepidermal elimination of bone spicules. We review the literature about previously reported similar cases.
authors.affiliation: Department of Dermatology, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain.
authors.forename: Rosario
authors.initials: R
authors.lastname: Haro
authors.forename: Juan M
authors.initials: JM
authors.lastname: Revelles
authors.forename: Jorge
authors.initials: J
authors.lastname: Angulo
authors.forename: Maria del C
authors.initials: Mdel C
authors.lastname: Fariña
authors.forename: Lucia
authors.initials: L
authors.lastname: Martín
authors.forename: Luis
authors.initials: L
authors.lastname: Requena
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000473:pathology*; D002610:Cheek / Q000473:pathology; D005546:Forehead / Q000473:pathology; D006801:Humans; D008297:Male; D009999:Ossification, Heterotopic / Q000473:pathology; D010016:Osteoma / Q000473:pathology*; D012535:Scalp / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*