| umls-concept:C1708751 | skos:definition | NCI: A tumor composed of atypical myofibroblasts, often with fibromatosis-like features and a predilection for the head and neck.,NCI: A low grade malignant neoplasm arising from the deep soft tissues. It is characterized by the presence of spindle-shaped fibroblasts and collagenous stroma formation in a storiform growth pattern. | lld:umls |
