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目的探讨腹膜后平滑肌肉瘤的CT与MRI表现,提高该病的诊断水平。方法回顾性分析医院8例经手术病理证实的腹膜后平滑肌肉瘤,分析其CT与MRI表现。结果 8例中7例发生于女性,均为单发,体积较大、其中6例直径>5cm;7例肿块密度、信号不均匀,内见范围不等的坏死区,增强扫描显示更清晰;动态增强扫描4例,CT与MRI表现相仿、呈渐进性、持续性中等程度强化;肿瘤累及输尿管至肾积水2例,累及邻近髂静脉1例。结论腹膜后平滑肌肉瘤是一种少见肿瘤,CT与MRI具有一定特征性表现,认识其影像学表现,有助于术前诊断。
Objective To investigate the CT and MRI findings of retroperitoneal leiomyosarcoma and to improve the diagnosis of this disease. Methods Retrospective analysis of 8 cases of pathologically confirmed retroperitoneal leiomyosarcoma hospital, analysis of CT and MRI findings. Results Of the 8 cases, 7 cases occurred in women, all of them were solitary and large in size. Among them, 6 cases were> 5 cm in diameter. Seven cases had necrotic areas with uneven density and uneven signal, Dynamic enhanced scan in 4 cases, CT and MRI showed similar performance was progressive, sustained moderate enhancement; tumor involving the ureter to hydronephrosis in 2 cases, involving the adjacent iliac vein in 1 case. Conclusion Retroperitoneal leiomyosarcoma is a rare tumor. CT and MRI have certain characteristic manifestations, recognize the imaging findings and contribute to the preoperative diagnosis.