subungual melanoma

(redirected from nailbed melanoma)

sub·un·gual mel·a·no·ma

a melanoma beginning in the skin at the border of or beneath the nail, usually of acral lentiginous type (q.v.).

subungual melanoma

A melanoma that presents under or adjacent to a fingernail, and which may extensively involve the finger.

sub·un·gual mel·a·no·ma

(sŭb-ŭng'gwăl mel'ă-nō'mă)
A melanoma beginning in the skin at the border of or beneath the nail.

subungual melanoma

locally nail-destructive, malignant, nail bed/matrix melanocyte tumour; two-thirds present as darkly pigmented lesions; one-third are amelanotic; pigmentation may show Hutchinson's sign