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To identify preoperative factors associated with 30-day morbidity and mortality after pheochromocytoma surgery, we carried out an external review of the records of all patients undergoing pheochromocytoma surgery from 1975 to 1997 at a single center. One hundred and forty-seven patients, including 23 with malignant tumors at the time of the first operation, underwent 165 operations. Death, resection of a neighboring organ, further surgery, secondary transfer to an intensive care unit, and any events associated with a surgical stay exceeding 10 days were defined as complications. Mortality and morbidity were 4 of 165 (2.4%) and 38 of 161 (23.6%), respectively. Morbidity included 13 spleen resections and hematomas. Spleen complications were not related to tumor location, but were probably due to the operative strategy used, a transperitoneal complete abdominal exploration including both adrenal glands. Complications were independently associated with preoperative systolic blood pressure [odds ratio (OR), 1.14/cm Hg], urinary metanephrine excretion (OR, 1.18/10 micromol x day), and with the number of operations (repeat vs. first operation OR, 5.36). In conclusion, pheochromocytoma resection consistently involves a risk of complications. Spleen damage should be prevented by complete preoperative localization studies and an elective or laparoscopic surgical approach. Careful blood pressure control should help prevent complications. Patients with high secretion tumors and those undergoing repeat intervention are at high risk of complications and should be referred to centers familiar with pheochromocytoma management.

the journal of clinical endocrinology and metabolism/journal of clinical endocrinology and metabolism

Factors Associated with Perioperative Morbidity and Mortality in Patients with Pheochromocytoma: Analysis of 165 Operations at a Single Center<sup>1</sup>

Factors Associated with Perioperative Morbidity and Mortality in Patients with Pheochromocytoma: Analysis of 165 Operations at a Single Center1

Factors Associated with Perioperative Morbidity and Mortality in Patients with Pheochromocytoma: Analysis of 165 Operations at a Single Center¹