Pheochromocytoma is an important correctable cause of high blood pressure althought it occurs in 0.1% of high blood pressure population. It is usually derived from the adrenal medulla but may develop from chromaffin cells in or about sympathetic
ganglia
and produces, stores and secretes catecholamines.
Pheochromcytoma is easily diagnosed by measuring the urinary catecholamines level and their serum level. And then we should undertake the exact location to plan to treatment by USG, CT, MRI, 131I-MIBG scan and so on while the patient is being
prepared
for surgery. The results of 131I-MIBG scan for pheochromocytoma included 78% sensitivity, 100% specificity, and 90% accuracy, so it is thought useful diagnostic tool.
During operation, intraoperative hypertension is usually thought a potential useful method to control intraoperative hypertention.
We experienced rather unusual pheochromocytoma, not visualized by 131I-MIBG scintigraphy and not response to nitroprusside for cotrol of intraoperative hypertension, so we present it wit review of the literature.
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