Longitudinal Melanonychia Biopsy: what not to do
Ocampo-Garza, J.; Bretas, J.M.; Matana, D.; Sobral, P.J.; Thompson, C.T.; Zaiac, M.; Tosti, A.
Journal of Drugs in Dermatology Jdd 17(5): 587-588
2018
ISSN/ISBN: 1545-9616 PMID: 29742195 Document Number: 17399
The nail matrix biopsy is an important technique in confirming or excluding a diagnosis of melanoma in a patient with longitudinal melanonychia. Dermatologists are the first-line diagnosticians for these pigmented lesions of the nail unit, however, for different reasons, some are reluctant to perform a nail biopsy. This case demonstrates how a poor biopsy technique resulted in a misdiagnosis in a patient with melanoma in situ.
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