Primitive myxoid mesenchymal tumor of infancy (PMMTI) is an aggressive with a high rate local recurrence, rare metastasis and poor response to chemotherapy.PMMTI soft-tissue sarcoma that preferentially affects infants. It isolated from the group infantile fibrosarcomas or myofibroblastic tumors. PMMTI differs other tumors in clinical course, morphological features primarily molecular genetic ch...