Pheochromocytoma Diagnosed during the Treatment of Diffuse Alveolar Hemorrhage, a Diagnostic Necessity before Using High-dose Glucocorticoids.

A 46-year-old woman with exacerbating hemoptysis and dyspnea was diagnosed with diffuse alveolar hemorrhage (DAH). High doses of glucocorticoids were initiated, but afterward, paroxysmal hypertension (210/140 mmHg) with headache and abdominal pain appeared. A 50-mm left adrenal tumor with an intense uptake by iodine-123 metaiodobenzylguanidine scintigraphy and catecholamine hypersecretion revealed complication with pheochromocytoma. Because high doses of glucocorticoids, sometimes required for DAH, can provoke life-threatening paroxysmal hypertension in pheochromocytoma and paraganglioma (PPGL), our case suggests that PPGL needs to be recognized as the cause of DAH and should be detected with whole-body imaging before starting glucocorticoids.