Adrenal Gland Disorders

Pheochromocytoma is a catecholamine-secreting tumor derived from chromaffin cells. The majority of tumors originate in the adrenal medulla, but they may also arise from sympathetic ganglia (also referred to as paraganglioma). Symptoms are associated with excessive catecholamine production and commonly include hypertension, tachycardia, headache, and sweating. Pheochromocytomas are frequently familial and associated with genetic syndromes. Approximately 90% of pheochromocytomas are benign and surgical resection is the only curative treatment. Prognosis is generally good for benign, sporadic tumors that have been completely resected. Familial forms are associated with higher recurrence rates and malignant potential.