Liposarcoma(LS) represents the most common soft-tissue sarcoma of adults and occurs most often in the thigh and retroperitoneum. LSs are subclassified into well-differentiated, myxoid, round cell, and pleomorphic types. The myxoid type, the most common subtype, accounts for approximately 40% to 54% of all liposarcomas. The karyotypic hallmark of myxoid LS is the t(12;16)(q13;p11), present cytogenetically in >90% of the cases. The translocation leads to the fusion of the DDIT3(CHOP) and FUS(TLS) genes at 12q13 and 16p11, respectively, and the generation of a FUS-DDIT3 hybrid protein. In 4 cases of myxoid LS, a variant chromosomal translocation has been described, t(12;22), in which DDIT3 fuses instead with EWSR1(EWS), a gene highly related to TLS.
Category
Cancer
Brite
Human diseases in ICD-11 classification [BR:br08403]
02 Neoplasms
Malignant neoplasms, except primary neoplasms of lymphoid, haematopoietic, central nervous system or related tissues
Malignant neoplasms, stated or presumed to be primary, of specified sites, except of lymphoid, haematopoietic, central nervous system or related tissues
Malignant mesenchymal neoplasms
2B59 Liposarcoma, primary site
H00049 Myxoid liposarcoma
