Tumoral Melanosis New England Journal of Medicine BAP1 INACTIVATED MELANOCYTIC TUMORS RARE CASES WITH METASTATIC POTENTIAL: While BAP1 inactivated melanocytic tumors are generally considered low risk lesions with predominantly benign behavior, emerging evidence suggests that this assumption may Melanotic schwannoma mimicking metastatic pigmented melanoma: a pitfall in cytological diagnosis Pathology Outlines Metastatic melanoma An 84 year old man with a history of metastatic melanoma of the scalp who was undergoing immunotherapy presented with new, multiple blue gray macules on the scalp.