Melanoma;
Nail unit;
Amputation;
Functional surgery;
Mohs micrographic surgery;
D O I:
10.1016/j.det.2020.12.006
中图分类号:
R75 [皮肤病学与性病学];
学科分类号:
100206 ;
摘要:
Fig. 1. Biopsy findings of early nail unit melanoma with Hutchinson sign. (A) A 62-year-old woman presented with irregular black to brownish longitudinal melanonychia with pigment extending to the hyponychium (Hutchinson nail sign). (8) A 6-mm punch biopsy shows the proximal nail fold and cuticle (blue arrow), the nail plate (green arrow), and nail matrix (red arrow) (hematoxylin and eosin [H&E], original magnification x20). The yellow box indicates the window for higher magnification photomicrographs in C and D. (C) Histopathologic findings are subtle, showing only increased pigmentation and melanocytes (H&E, original magnification x100). (D) Melan-A highlights continuous proliferation of melanocytes with prominent dendrites and pagetoid scatter