Fig. 3: Spitz melanoma with ALK fusion.
From: Spitz melanoma is a distinct subset of spitzoid melanoma
a Low power view of case 7 with a DCTN1-ALK fusion. As is characteristic in melanomas with ALK fusions, there are large vertically oriented nests in the superficial dermis. b Medium power view shows fusiform melanocytes arrayed in irregularly sized dermal nests with discohesive melanocytes (arrow). c High power view shows epithelioid melanocytes and multiple dermal mitoses.
