Inflammatory myofibroblastic tumor of the left main stem bronchus.

Inflammatory myofibroblastic tumor (IMT) (pseudotumor) is a rare solid tumor that most commonly affects the lung. Its unknown etiology and cellular variability have resulted in inconsistent naming of this lesion. Treatment modalities have varied, but complete surgical resection seems to be most appropriate. We describe a 28-year-old woman with a near-obstructing IMT of the left main stem bronchus (LMB) treated with bronchial sleeve resection.