原发性腹膜后肿瘤的CT表现

目的：探讨CT对原发腹膜后肿瘤的诊断价值。方法：搜集26例经手术病理证实的原发性腹膜后肿瘤病例，分析其影像表现。11例行CT平扫，15例行CT平扫及增强检查。结果：26例中良性肿瘤14例，恶性肿瘤12例。CT正确定位23例（88．5％），正确定性9例（34．6％），其中良性肿瘤6例，恶性肿瘤3例。肿瘤全切15例（57．7％），肿瘤部分切除9例（34．6％），2例行开腹探查仅取活检。结论：CT对于原发性腹膜后肿瘤定位及肿瘤良恶性鉴别具有重要价值，而在判断肿瘤组织类型方面价值有限。

CT manifestations of primary retroperitioneal neoplasm

Objective To evaluate CT diagnosis of primary retroperitioneal neoplasm (PRN) . Methods The imaging appearances were analyzed in 26 cases of PRN proved by operation and pathology. of the 26 cases, plain and enhanced CT scans were performed on 15 cases, and only plain CT scans on 11 cases. Results 14 masses out of 26 were benign and the rest 12 were malignant. 23 of the masses(88. 5% ) were correctly localized by CT. Correct qualitative diagnosis was made with CT in 9 cases (34. 9% ), among which 6 were benign and the rest 3 were malignant. Radical resection was snccessful in 15 cases out of 26; subtotal resection was performed in 9; and la-parotomy and bropsy were done in 2 cases. Conclusion CT scan is a raluable imaging for localization as well as differential diagnosis of PRN, while provides limited qualitative determination.