2018 Volume 40 Issue 1 Pages 54-58
Background. Inflammatory myofibroblastic tumor (IMT) is a rare pulmonary tumor that accounts for only 0.04% of all lung tumors. These tumors exhibit characteristics of myofibroblastic proliferation with infiltration of inflammatory cells. Tracheal or bronchial IMT is an even rarer pulmonary tumor. Case. A 36-year-old man presented to a hospital with hemoptysis, and bronchoscopy revealed a tumor obstructing the right truncus intermedius. He was diagnosed with IMT and admitted to our hospital to receive surgery. Computed tomography showed a mass shadow at 5 mm from the second carina on the distal side, measuring 15×10 mm. It completely obstructed the right truncus intermedius. We performed right middle sleeve lobectomy with preservation of the lower lobe. A histopathological examination revealed spindle cell hyperplasia with lymphocyte and plasma cell infiltration. Immunostaining was positive for SMA, vimentin, and ALK and negative for AE1/AE3, S-100, and desmin. A confirmed diagnosis of IMT was made. Since his surgery, the patient has survived without relapse for seven months. Conclusion. Tracheal or bronchial IMT is a very rare disease. Complete tumor resection is necessary.
