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AMA Arch Surg. 1956;73(2):369-370. doi:10.1001/archsurg.1956.01280020183034.
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WHILE pheochromocytomata are being reported with increasing frequency, the incidence of pheochromoblastoma, the malignant form, is infrequent enough to justify reporting the present case.

A 46-year-old white man was admitted to this hospital on June 4, 1954, complaining of headache and partial blindness. He had had two previous admissions to this hospital. The first was in June, 1935, for an appendectomy when his blood pressure was recorded as 120/70, and the second was in September, 1950, for a hemorrhoidectomy when his blood pressure was recorded as 130/80 on admission and 160/100 while under thiopental (Pentothal) anesthesia for a hemorrhoidectomy. He was a patient in the Union Memorial Hospital, Baltimore, in 1946 for a spinal fusion for ruptured intervertebral disc between the 4th and 5th lumbar vertebrae. His blood pressure at that time was recorded as 170/80.

He was admitted to Mercy Hospital, Baltimore, on May 15, 1954, with the same


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