The malignant mesenchymoma is not rare actully,but owing to the one sidedness of sampling,it is always diagnosed pathomorphogically as one singletissue sarcoma.

恶性间叶并不少见，但由于病例取材局限，每把诊成织的肉。

Objective To discuss the CT manifestation of retroperitoneal malignant mesenchymoma .

探讨腹膜后恶性间叶的CT平扫和增强表现及鉴别诊要点。