title: [Subungual malignant lentigo with longitudinal nail pigmentation--diagnosis and surgical treatment].
abstract: A subungual Lentigo maligna was found to be the cause of a longitudinal melanotic stripe in the thumbnail of a 45-year old male. Because of the possibility of a malignant process, a histological diagnosis must be made in all cases of pigmented nail stripes. The best procedure is complete excision of the lesion in a bloodless field, followed immediately by frozen section analysis. According to the result either a larger operation is made during the same session or the wound closed. This procedure enables a specific therapy of pigmented subungual lesions, and contributes to the early recognition and prophylaxis of subungual malignant melanomas.
mesh_terms: D000671:Amputation, Surgical; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis; D008875:Middle Aged; D009260:Nail Diseases / Q000175:diagnosis* / Q000601:surgery; D009262:Nails / Q000473:pathology / Q000601:surgery; D009508:Nevus, Pigmented / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013933:Thumb / Q000601:surgery
vernacular_title: Subunguale Lentigo maligna mit streifenförmiger Nagelpigmentierung--Diagnostik und operative Behandlung.