探讨肺外炎性肌纤维细胞瘤（IMT）的影像学诊断价值并与病理对照。

回顾性分析8例经手术病理证实的肺外IMT的CT、MRI表现。将CT、MRI表现与病理进行对照分析,探讨其CT、MRI表现的病理基础。

8例肺外IMT患者中7例行CT检查，其中1例同时行MRI检查；1例行MRI检查。CT平扫病灶表现为实性软组织密度，平扫密度均匀2例；不均匀5例，其中3例增强扫描呈明显不均匀强化；伴有邻近骨质破坏3例。MRI增强扫描1例明显均匀强化；1例增强后不均匀强化。病理表现为为成纤维细胞增生，间质胶原化、毛细血管增生与黏液变性，伴多量炎性细胞浸润。

肺外IMT的CT、MRI征象与病理表现相符合，影像学检查有助于IMT的正确诊断和鉴别诊断，对明确病灶范围以及与邻近组织器官关系有重要价值，对术前诊断、指导临床选择合理的治疗方案有很大帮助。

To explore diagnostic value of CT and MRI inflammatory myofibroblastic tumor (IMT) and to compare with pathology.

CT and MRI findings of 8 patients with IMT confirmed by operation and pathology were retrospectively analyzed, and compared with pathology. The pathological basis of the CT, MRI expression was explored.

Among the 8 cases, 7 cases received CT examination (of which 1 cases also underwent MRI examination), 1 received MRI examination. The main CT signs of IMT showed as follows: 2 cases were relatively homogeneous in density, the other 5 cases were nonhomogeneous density, including of 3 cases with obvious uneven enhancement. Neighboring bone were destructed in 3 cases. On MR imaging: 1 case showed even enhancement, another showed around the high aparent heterogeneous enhancement. Fibroblast proliferation, interstitial collagen, capillary hyperplasia and mucus degeneration and large amounts of inflammatory cell infiltration could be seen pathologically.

CT and MRI findings of extrapulmonary IMT are well corresponded with pathology. CT and MRI examinations can help to make the diagnosis and differential diagnosis. It is very useful for mapping the extension of IMT, relationship with adjacent organs, choosing the perfect treatment ways and preoperative diagnosis.