label: BAP1-Inactivated Melanocytoma
label_lc: bap1-inactivated melanocytoma
description: "A cutaneous melanocytoma caused by the inactivation of BAP1 tumor suppressor gene. It is characterized by the presence of a predominantly intradermal proliferation of large epithelioid melanocytes with a large amount of eosinophilic cytoplasm, and vesicular nuclei with prominent nucleoli. Progression to melanoma is infrequent."