Primary malignant melanoma of the adrenal gland.

Primary malignant melanoma of the adrenal gland is an established entity. Fewer than 20 cases have been reported in the published literature. Because of the high frequency of adrenal gland metastases from malignant melanoma and pigmented pheochromocytoma, several rigid diagnostic criteria have been established for accepting an adrenal melanoma as primary. A new case is reported in this article. This observation is an opportunity update the literature on the diagnostic difficulties in this rare pathology.