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报告经手术后病理证实的原发性后腹膜肿瘤１６例，其中神经源性肿瘤７例，脂肪肉瘤４例，良性畸胎瘤３例，平滑肌肉瘤和嗜铬细胞瘤各１例。后腹膜肿瘤的ＣＴ基本表现为软组织肿块与邻近脏器的受压移位和受累，１６例中ＣＴ定位正确１４例，定性正确１０例，并结合临床表现及其它影像学检查，讨论了术前ＣＴ对定位、定性的诊断价值。
Sixteen cases of primary retroperitoneal neoplasia confirmed by pathology after surgery were reported, including 7 cases of neurogenic tumor, 4 cases of liposarcoma, 3 cases of benign teratoma, 1 case of leiomyosarcoma and 1 case of pheochromocytoma. The CT of posterior peritoneal tumors was basically the compression displacement and involvement of soft tissue masses and adjacent organs. Among the 16 cases, 14 were correctly positioned by CT, 10 were correct, and combined with clinical manifestations and other imaging examinations. The diagnostic value of CT for positioning and qualitative diagnosis.