A left retroperitoneal tumor was found incidentally, and a final diagnosis of retroperitoneal Schwannoma was confirmed by histological and special immunohistochemical studies.

• 意外地在其左侧后腹腔发现一肿瘤，手术后利用组织学及免疫染色的方法来确定诊断，经证实为良性后腹腔神经鞘瘤。