benign perivascular tumor obsolete muscular tumor infantile myofibromatosis https://rarediseases.info.nih.gov/diseases/2998/infantile-myofibromatosis https://www.malacards.org/card/infantile_myofibromatosis myofibromatosis NORD:1301 MEDGEN:140933 infantile myofibromatosis UMLS:C0432284 MONDO:0016824 ONCOTREE:IMS NCIT:C3742 OMIMPS:228550 DOID:0080109 GARD:0002998 Orphanet:2591 IMS infantile hemangiopericytoma ICDO:8824/1 multicentric myofibromatosis A benign, multifocal, nodular and well-circumscribed neoplasm usually seen as a congenital neoplasm or in the first year of life. It is characterized by a biphasic growth pattern and is composed of small, undifferentiated mesenchymal cells associated with branching thin-walled vessels and more mature neoplastic spindle cells with abundant eosinophilic cytoplasm in a collagenous stroma. MESH:D018224 obsolete rare skin tumor or hamartoma hereditary disorder of connective tissue benign soft tissue neoplasm