Computed Tomography Features of Inflammatory Myofibroblastic Tumor

  Objective  To summarize the computed tomography (CT) features of inflammatory myofibroblastic tumor (IMT).

  Methods  CT findings were retrospectively reviewed in 9 patients with pathologically proved IMT.

  Results  Three IMTs in the lungs were detected by CT. Two of them manifested masses with well demarcation while another case only showed bronchial obstruction without detectable mass. Three tumors were located in the mediastinum and showed soft tissue attenuation under CT. One was well-defined and the other two had unclear border with the surrounding structures. IMTs were also found at nasion (n=1), neck (n=1), and pelvis (n=1), which were shown to be cystic-solid or solid masses while some tumors were invasive with ill-defined margin. After contrast administration, 3 cases showed marked heterogeneous enhancement.

  Conclusion  IMTs have certain CT features, but the final confirmation depends on pathology.