Onychopapilloma
An onychopapilloma of a fingernail - note the longitudinal line and the projecting subungual spicule
Keywords: Female, Fingernail, Hand, Lesion (benign), Nail plate keratotic mass, Nail thickeneing overlying keratotic mass, Onychopapilloma, Splinter hemorrhages, Subungual hyperkeratosis, White longitudinal band
What is onychopapilloma?
Onychopapilloma is a benign neoplasm of the nail matrix. It is usually an isolated lesion affecting one nail. Multiple nail involvement is rare and may be a sign of a BAP1 tumour predisposition syndrome. Rarely malignant onychopapilloma may occur with a histology of Bowen’s disease.
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