Histopathologic features of pediatric melanoma

Histopathology of melanoma from an adolescent patient.

(A) Polypoid expansile proliferation of severely atypical epithelioid melanocytes in nests extending into the mid-dermis (4× magnification).

(B) Hyperchromatic, atypical epithelioid melanocytes with irregular nuclear contours and mitotic figures (40× magnification).