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目的：总结并探讨原发性腹膜后肿瘤（PRPT）的诊断及治疗方法。方法：回顾并分析2004 年1 月至2009 年12 月收治的46 例腹膜后肿瘤患者的临床资料及随访结果。结果：良性肿瘤17例，完整切除15例，部分切除2 例，复发4 例，均再次手术；恶性肿瘤29 例，完整切除10 例，部分切除15 例，活检2 例，复发6 例，再次手术4 例。随访时间0.5 至5 年，良性肿瘤死于其他疾病3 例，死于原发性腹膜后肿瘤1 例；恶性肿瘤死亡22 例，其中1 年内死亡8 例，3 年内死亡12 例，5 年内死亡2 例。结论：对原发性腹膜后肿瘤，B 超、CT 及MRI 检查是目前诊断PRPT 方便、有效的诊断手段，手术治疗是治疗PRPT 的首选治疗方式，完整切除肿瘤是影响PRPT治疗效果及其预后的重要因素。对于复发病例应选择再次手术治疗。

英文摘要:

Objective: To summarize and review our experience on the diagnosis and treatment of primary retroperitoneal tumor (PRPT). Methods: The clinical data of 46 patients with PRPT (from Jan. 2004 to Dec. 2009) were retrospectively analyzed, and the clinical experience on diagnosis, treatment and follow-up survey were summarized. Results: There were 17 cases of benign tumor and 29 cases of malignant tumor in all the cases. 15 cases of benign PRPT and 10 cases of malignant PRPT underwent complete resection. 2 cases of benign PRPT along with 15 cases of malignant PRPT underwent partial resection. All 4 cases of recurrent benign PRPT underwent second resection, as well as 4 cases of 6 cases who suffered from recurrent malignant PRPT. The follow-up survey lasted 0.5 to 5 years. 1 patient of benign PRPT died on PRPT and 3 patients died on other diseases. Besides 8 patients of malignant PRPT who died within 1 year, 12 and 2 patients of malignant PRPT respectively died within 3 and 5 years. Conclusion: Ultrasound examination and imaging diagnosis can conveniently and effectively identify PRPT. Surgical treatment is the first choice for PRPT. Complete resection is a key factor in curing PRPT. Patients with recurrent PRPT should receive second operation.

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