Retroperitoneal inflammatory myofibroblastic tumor, a case report

Inflammatory myofibroblastic tumor (IMT) is a rare tumor with unknown etiology which usually occurs in children and adolescents. It is composed of myofibroblastic spindle cells intermixed with inflammatory cells. Our case was a 26-years-old man presented with pain، weight loss، anemia and abdominal mass. CT scan showed hypodensity and heterogeneous retroperitoneal mass with gastric، splenic and left Kidney compression. IMT was diagnosed with postoperative microscopic evaluation based on the face that IMT is now generally considered to be a potential neoplasm، clinicians must consider it and IMT should be added to the list of differential diagnoses of anemia and abdominal mass. In addition، despite benigne histological features، because the risk of invasive behavior of the tumor، a long term clinical and radiological follow up is necessary for involved patients.