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Nonfunctional pheochromocytoma is a particular type of pheochromocytoma without typical clinical features of catecholaminism. It is difficult to diagnose or differentially diagnose. This type of pheochromocytoma is rarely reported in the literature. From January 1, 1990 to June 1, 2004, we performed operations for 197 patients with pheochromocytomas, including 26 patients with nonfunctional pheochromocytoma. We analyzed the clinical data of the 26 patients.
Nonfunctional pheochromocytoma is a particular type of pheochromocytoma without typical clinical features of catecholaminism. It is difficult to diagnose or differentially diagnose. This type of pheochromocytoma is rarely reported in the literature. From January 1, 1990 to June 1, 2004, we performed operations for 197 patients with pheochromocytomas, including 26 patients with nonfunctional pheochromocytoma. We analyzed the clinical data of the 26 patients.