Mondo Description A multinodular intermediate fibroblastic neoplasm that arises from soft tissue or viscera, in children and young adults. It is characterized by the presence of spindle-shaped fibroblasts and myofibroblasts, and a chronic inflammatory infiltrate composed of eosinophils, lymphocytes, and plasma cells.

Disease Ontology Description A mesenchymal cell neoplasm that has_material_basis_in myofibroblastic cells admixed with inflammatory cells.