Diverse Clinical Manifestations of Pheochromocytomas

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Abstract
Many difficulties are encountered by clinicians in attempting to diagnose pheochromocytomas. We describe several patients with unusual clinical features. These include sudden death, cerebral hemorrhage, refractory con gestive heart failure, acute abdominal pain, and hypercalcemia. In 2 patients, the rare association of this tumor and pregnancy was observed. Two subjects had sudden death, 1 during a pneumoencephalogram and another during an epidural block. The clinicians should be aware of these manifestations of pheochromocytomas.