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A 28 year old male presented with hypertension since one year. Physical examination was unremarkable, lab tests revealed elevated VMA and Metanephrine levels in 24hr urine sample and CT scan revealed normal adrenal glands, but a large (10 cm) tumor was seeen in the pelvic area below the aortic biforcation anterior to the sacrum. The patient was scheduled for surgery with a diagnosis of pheochromocytoma. Preoperative preparation was started one week before surgery with phenoxybenzamine. After removal of the tumor the patient developed sudden severe hypotension which was refractory to intravenous fluids, blood and vasopressors, He responded only to noradrenaline. The drug was continued for 24 hrs. Postoperative VMA and metanephrine levels normalized and remained normal during the three months after surgery. There were no instances of hypertension throughout this period.