肾平滑肌肉瘤的CT表现

目的:讨论肾平滑肌肉瘤的CT表现。方法:对9例经病理证实的肾平滑肌肉瘤的CT征象进行回顾性分析。结果:CT表现为均匀高密度肿块2例,高、低、等混杂密度,其内有坏死、囊变6例,表现为均匀等密度肿块1例。CT增强扫描肿块多呈不均匀强化,其内可见液化、坏死征象。结论:肿块较大,坏死、囊变明显及肿块内出血为肾平滑肌肉瘤的主要CT表现,但其影像学表现于肾癌相似,术前难以鉴别,最终确诊依靠病理学检查。

CT Diagnosis of Renal Leiomyosarcoma

Objective To discuss the CT manifestations of renal leiomyosarcoma. Methods 9 cases of renal leiomyosarcoma proved by pathology were analyzed retrospectively. Results CT imaging showed homogeneous hyperattenuation in two cases. Heterogeneous in density with necrosis inside was observed on the CT scan in six cases. After contrast medium administration heterogeneous enhancement with cystic and necrotic areas could be revealed in all cases on both CT scan. Conclusion Large renal mass with intra-tumor necrosis,cystic and hemorrhagic change is the characteristic manifestations of renal leiomyosarcoma. But differential diagnosis from renal carcinoma by CT clinical setting is difficult before surgery, and final diagnosis should depend on pathology examination.