[Non-pigmented subungual malignancies--crux chirurgiae minoris].

Background: Incidence of amelanotic subungual malignancies is small, but they are not extremely rare and are often omitted in the diagnostic algorithm of subungual lesions.

Methods: Retrospective analysis of four amelanotic subungual tumours--2 subungual melanomas and 2 spinocellular carcinomas. Diagnosis was made by surgeon and pathologist.