嗜铬细胞瘤是一种少见的肿瘤,约有10～30%发生于肾上腺外的交感神经节或副交感神经节之嗜铬组织中。我科收治腹主动脉旁恶性嗜铬细胞瘤及膀胱壁嗜铬细胞瘤各一例,现报告如下。病例介绍例1,女,60岁,左上腹包块8年,入院前一年来感左上腹发胀,食欲减退,低热,以腹块待查人 Pheochromocytoma is an uncommon tumor, with about 10 to 30% occurring in the extra-adrenal sympathetic ganglia or parasympathetic ganglia in the chromaffin tissue. In our department, one case of malignant pheochromocytoma beside the abdominal aorta and one case of pheochromocytoma on the bladder wall are reported. The report is as follows. Case Introduction Case 1, Female, 60 years old, left upper abdomen mass for 8 years, feeling swollen left abdomen for one year before admission, loss of appetite, low fever, abdominal mass to be investigated