There is evidence for a close interrelation between the adrenomedullary and adrenocortical tissues, and there are well-characterized models of their paracrine interaction. To contribute to the studies of systemic interactions between these tissues, we studied a 52-year-old female patient with a
pheochromocytoma and a contralateral
cortisol-producing
adenoma. Due to a misunderstanding, she presented to her family doctor to have an inherited
kidney disease ruled out. An adrenal mass was discovered incidentally by ultrasound. A computerized tomography of the abdomen revealed bilateral adrenal masses. Due to excess
catecholamine secretion, bilateral
pheochromocytomas based on
multiple endocrine neoplasia syndrome were suspected. Laboratory work-up, selective adrenal venous sampling and magnetic resonance imaging studies established the diagnosis of a
pheochromocytoma in the right-hand adrenal gland and a
cortisol-producing
adenoma on the left. Simultaneous bilateral laparoscopic subtotal
adrenalectomy was performed. Immunohistochemistry showed positive staining against
chromogranin A in a histological specimen obtained from the right-hand adrenal gland, while the left was negative; the left-hand adrenal gland stained positive against the
ACTH receptor (MC2R) while the right was negative. Genetically, the patient was negative for MEN2,
von Hippel-Lindau disease, and mutations in subunits B, C, and D of the
succinate dehydrogenase gene. Although presence of bilateral adrenal
adenomas or bilateral adrenal
pheochromocytomas in certain inherited disorders are possible, this rare case of an adrenal
pheochromocytoma combined with a contralateral
cortisol-producing adrenal
adenoma may further underline the wide range of complex interactions between the two endocrine systems.