Adrenal medullary
hyperplasia is an increase in the mass of the adrenal medullary
cells. We
report a case of a 38-year-old man presenting with
pheochromocytoma-like symptoms
who was preoperatively misdiagnosed with
pheochromocytoma.
Hypertension was associated with an
intracranial hemorrhage evident in a
brain computed
tomography scan, in which no obvious
pituitary gland enlargement was detected. An abdominopelvic CT revealed a solitary
tumor in the right
adrenal gland with no obvious enlargement of the contralateral
adrenal gland or sympathetic chains. Lab results showed increased levels of urinary metanephrines. Based on clinical data, the
patient underwent a laparoscopic right
adrenalectomy bases on a
diagnosis of
pheochromocytoma. The
patient was finally diagnosed with adrenal medullary
hyperplasia with coexisting ipsilateral non-functioning
adrenal cortical adenoma. Postoperatively,
blood pressure and lab results were maintained in the
normal range and the
patient was symptomatically free during the follow-up period.