A 59-year-old black man with adrenocortical failure was found at autopsy to have metastatic destruction of the pituitary infundibulum and of one adrenal gland. A review of the literature indicates that on the average 22% of patients dying with cancer have metastases to the adrenals, and 5% have metastases to the pituitary-hypothalamic region. Much higher incidences have been reported in some studies. By comparison, clinical hypopituitarism and hypoadrenalism due to such metastases have been reported very infrequently. This discrepancy may derive partly from failure to diagnose hypopituitarism and hypoadrenalism in the presence of disseminated cancer. we have found in the literature only one documented report that they h a v e caused adrenal failure.I2 We report on a patient with adrenocortical insufficiency who had total destruction of the pituitary infundibulum and of one of his a d r e n a l glands by metastases from a bronchogenic carcinoma.
Case ReportA 59-year-old black man previously in good health was admitted with weakness, nausea, vomiting, and diarrhea of several weeks duration. On admission, he was hyperpigmented, obtunded, emaciated, and dehydrated. His blood pressure was 70150 mm Hg, and his liver was moderately enlarged. The remainder of the physical examination including the nervous and the reproductive systems showed no abnormality. The relevant laboratory data were: Na' 135 mEqll, KC 5.7 mEq/l, CI-102 mEq/l, C 0 2 16 mEq/l, blood urea nitrogen 46 mgidl, and creatinine 3 mg/dl. The chest x-ray showed a prominent left hilum but was considered negative. The patient was suspected to have primary adrenocortical failure and, after a rapid ACTH stimulation test (Table 1).was treated with i.v. saline and cortisol. H e soon became alert and normotensive, and his Na+, K+, BUN, and creatinine levels became normal. A prolonged ACTH stimulation test was performed ( Table 1). During the ensuing two weeks, the patient was well, but he later had a left-sided seizure. A brain scan revealed a right parietotemporal mass. Chest tomograms demonstrated a left hilar mass. Sonography of the abdomen revealed a mass in the left lobe of the liver. The patient refused further studies and was discharged on cortisone, Florinef, and Dilantin. The patient failed to take his medications, and again weakness, nausea, vomiting, and diarrhea developed. After five days, he had another seizure and was readmitted. On admission, the patient was cachectic, dehydrated, hypotensive, and aphasic. Routine biochemical studies again showed: Na+ 134 mEq/l, K + 6.1 mEq/l, C1-104 mEq/l, CO, 14 mEq/l, BUN 50 mg/dl, and creatinine level 2.5 mg/dl. There was again a prompt response to saline and cortisol. The aphasia, however, persisted. Two weeks later, the patient had another seizure, which was followed by left hemiplegia. He died with pneumonia a few days later.At autopsy, there was a squamous cell carcinoma of the left main stem bronchus. It had metastasized to the right adrenal gland, completely destroying it. Other metastases were in the liver...