Abstract
We describe 7 patients with 16 malignant pheochromocytomas, with followup for 7 to 21 years. Five patients are free of disease at a mean of 13.5 years and 2 patients died of malignancy at 10 and 13 years. The 3 criteria believed important for a maximum tumor-free interval are: 1) adjunctive lymphadenectomy at the initial operation when 1 or more lymph nodes contain tumor, 2) close followup of all patients with pheochromocytoma by diagnostic biochemical assay for 15 years and 3) an aggressive excision of all single or multiple recurrent pheochromocytomas as soon as a biochemical diagnosis is established.
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