Lipomatous tumor Liposarcoma 2012-07-27T01:40:25Z HP:0012034 SNOMEDCT_US:49430005 Malignant neoplasms which probably originate in primitive mesenchymal stem cell populations differentiating down a lipomatous pathway. MPATH:418 UMLS:C0023827 SNOMEDCT_US:254829001