Lichenoid Nail Unit Changes in an Elderly Patient: Challenge

Clinicohistopathologic challenges and traps in the diagnosis of nail unit melanoma

“…[16][17][18][19] Solitary lichenoid nail changes, such as longitudinal splitting or ridging, nail plate atrophy, or onychodystrophy, should prompt consideration for a NUM. [20][21][22][23] Within our group, we previously published cases of NUM that were clinically suspicious for onychomycosis, 24 lichen planus, 25,26 and posttraumatic onychodystrophy. 27 A clue to NUM in a patient with monodactylous nail dystrophy includes the presence of a proximal atypical lentigo.…”