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目的 提高腹膜后肿瘤的手术效果。方法 回顾分析1980－2001年腹膜后肿瘤28例的治疗情况。结果 完整切除21例，部分切除或探查活检7例，无手术死亡。5年生存率分别为：未切除组14．3％，恶性切除组37．5％，良性切除组69．2％。结论 提高手术切除率是改善预后的关键，术前核磁共振（MRI），数字减影（DSA）检查有助于了解肿瘤内及周围血管的走行，用不同方法处理侵及重要血管的腹膜后肿瘤并争取彻底切除，是减少术后复发，提高生存率的重要方法。

Clinical analysis of diagnosis and treatment in 28 cases of retroperitoneal tumor

Objective To improve treating efficacy of operation for retroperitoneal tumor. Methods Twenty-eight patients with retroperitoneal tumor from 1980 to 2001 were retrospectively analyzed.Results Radical resection was performed in 21 patients,partial resection or biopsy was performed in 7 cases.There was no death in the operation.The 5-year survival rate for non-resection group was 14 3%,complete resection group of malignant tumor was 37 5% and benign tumor was 69 2%.Conclusion To increase removal rate is the key of improving prognosis.Preoperative MRI and DSA can be used to understand vessels both inside and adjacent to tumor.Resecting angioinvading tumor vascular repairing and reconstruction when major blood vessels are involved in are important procedures to prevent relapse and improve the survival rate.