PRKAR1A and bone neoplasm: CNC, mostly due to germline inactivating mutations of PRKAR1A, is rarely associated with ACC but is the main cause of primary pigmented nodular adrenal diseases and usually linked to other tumors (somatotroph pituitary adenomas, thyroid, breast, and bone tumors, Sertoli tumors, melanocytic schwannoma, and cardiac and cutaneous myxomas) (5).