ALK and inflammatory myofibroblastic tumor: In recent years, a highly aggressive intra-abdominal variant of IMT has been described with epithelioid-to-round cell morphology with nuclear membrane or perinuclear ALK staining and predilection for male patients, which has been termed “epithelioid inflammatory myofibroblastic sarcoma” to convey the malignant nature of this tumor and close relation to IMT [27].