腹膜后平滑肌肉瘤的CT、MRI表现  

CT and MRI Findings of Retroperitoneal Leiomyosarcoma

作　　者：王欣璐[1] 杨广夫[1] 王璐[1] 王亚蓉[1] 杨健[1] 郭佑民[1] 鱼搏浪[1] 王莉君[1] 杨志英[1] 

机构地区：[1]西安医科大学第一临床医学院医学影像中心,710061

出　　处：《现代医用影像学》1999年第6期243-245,共3页Modern Medical Imageology

摘　　要：目的：研究腹膜后平滑肌肉瘤的CT、MRI表现。材料与方法：本组经病理证实16例，男9例，女7例。平均年龄52．8岁。16例中14例CT检查，其中5例作了强化扫描，3例MRI扫描。结果：肿瘤多见于左上腹膜后（10／16）及右侧盆底壁（3／16）。均为单发，直径＞5cm（14／16），多呈不规则结节肿块（15／16）。CT平扫低于肌密度（14／14），强化扫描呈周边强化（5／5），密度不均匀（11／16），多有侵犯特点（15／16），无淋巴结转移。结论：发生于左上腹膜后及右侧盆底有侵犯特点的巨大肿瘤应考虑本病诊断。Purpose: To study the CT and MRI findings of retroperitoneal leiomyosarcoma. Materials and Methods: Sixteen cases of retroperitoneal leiomyosarcomas proved by pathology were presented. There were nine cases of male, and seven cases of females.The average age was 52. 8 years. Fourteen cases were studicd by CT, among these cases CT enhancement studies were obtained in five cases. Three cases were studied by MRI. Results: Ten cases were located in upper left part of retroperitoneal space, and three cases in the right wall of pelvic bottom. All cases were single mass, fifteen cases were more than 5 cm in diameter and showed irregular or nodulc in shape. On CT study, all cases were hypodensity (14/14 ), and showed an edge enhancement on contrast injection studies (5/5 ).Most cases were demonstrated a heterogeneous finding on CT or MRI study and found an invasive characteristics. All cases did not find any metastatic lymph nodes. Conclusion: It should be considered the diagnosis of retroperitoneal leiomyosarcoma if a large tumor is found in upper left part of retroperitoneal space or in the right wall of pelvic bottom, and showed obvious invasive characteristics.

关 键 词：腹膜后肿瘤 平滑肌肉瘤 CT MRI 诊断 

分 类 号：R735.404[医药卫生—肿瘤]