A Giant Ureteral Inflammatory Myofibroblastic Tumor in a 4-Year-Old Child: A Case Report and Review of the Literature.

Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm of children and young adults. It consists of myofibroblastic cells of borderline malignancy admixed with inflammatory cells. According to the WHO classification, of tumors, it is a soft-tissue tumor with an intermediate malignant potential.