Source:http://linkedlifedata.com/resource/umls/id/C1704218
NCI: A small group of undifferentiated pleomorphic sarcomas that show no definable line of differentiation.,NCI: A morphologic variant of malignant fibrous histiocytoma. It is well-circumscribed tumor characterized by the presence of bizarre giant cells, spindle cells, round histiocyte-like cells, stromal chronic inflammatory cells, and nuclear pleomorphism in a prominent storiform pattern.