title: Onychomatricoma with misleading features.
abstract: Onychomatricoma is a rare tumour of the nail matrix with peculiar clinical and histological features and electron microscopic findings. We report on 5 cases with appearances which were misleading. Three presented as longitudinal melanonychia, a previously unreported observation. One case had the appearance of a cutaneous horn. In 3 of the 5 cases the tumour was associated with an onychomycosis and this may thus have been a predisposing factor in the secondary fungal infestation. Onychomatricoma appears as a multi-faceted tumour which can be mimicked by longitudinal melanonychia and/or onychomycosis.
authors.affiliation: Department of Dermatology, Centre Hospitalier Universitaire Dupuytren, Limoges, France.
authors.forename: J
authors.initials: J
authors.lastname: Fayol
authors.forename: R
authors.initials: R
authors.lastname: Baran
authors.forename: C
authors.initials: C
authors.lastname: Perrin
authors.forename: F
authors.initials: F
authors.lastname: Labrousse
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D005670:Fusarium / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000175:diagnosis* / Q000473:pathology; D009262:Nails / Q000473:pathology; D014009:Onychomycosis / Q000175:diagnosis / Q000473:pathology; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology