Objective To discuss the CT manifestation of retroperitoneal malignant mesenchymoma .

探讨腹膜后恶性间叶瘤的CT平扫和增强表现及鉴别诊断要点。

ObjectiveTo discuss the CT manifestation and clinical significance of rare neoplasm in maxillary sinus, includingmalignant myoepithelioma, angioendothelioma, sarcoma of plasmacyte.

目的探讨上颌窦恶性肌上皮瘤、血管内皮瘤及浆细胞肉瘤的CT表现及临床意义。