Black (pigment) adrenal adenoma is a rather rare adenoma of the cortical layer of the adrenal gland. It has black or brown appearance and contains lipofuscin in its cell cytoplasm. Preoperative diagnosis of black adrenal adenoma is complicated as verification of the adenoma is based on histological features. The work presents a rare case of incidentally discovered non-functioning black adenoma of the right adrenal gland in a 52-year-old woman.
Black adrenal adenoma causing subclinical Cushing’s syndrome complicated with pheochromocytoma