Introduction: Inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal tumor usually seen in the first and second decade. They are very rare in adults, constituting less than 1% of adult lung tumors. It's usually benign, but it had an affinity for local recurrence. We reported a case of IMT at the lung in a 49-year-old male. In our setting the case report was interesting due to the recurrent accumulation of the effusion until pathological assessment done.
Discussion: We reported this case in hopes it may aid clinicians to broaden their pre-operative differential diagnosis. That is because IMT has an ambiguous clinical presentation, and needs to be differentiated from other lesions on the basis of histopathological findings and immunohistochemical analysis. Usually the diagnosis is made by pathological examination after complete surgical excision, which is the mainstay treatment advocated.
Conclusion: IMT is a rare benign tumor. Clinical and radiological presentation is variable and nonspecific and the diagnosis is rarely made before surgical management. Only histopathology can confirm the diagnosis.