Well-Differentiated Liposarcoma, also known as atypical lipomatous tumor, is related to liposarcoma and lipomatosis, familial multiple. An important gene associated with Well-Differentiated Liposarcoma is MDM2 (MDM2 Proto-Oncogene), and among its related pathways/superpathways are Cellular Senescence and Endometrial cancer. Affiliated tissues include tongue and smooth muscle, and related phenotypes are subcutaneous nodule and gastrointestinal dysmotility