Journal of Practical Oncology ›› 2023, Vol. 37 ›› Issue (1): 83-86.doi: 10.11904/j.issn.1002-3070.2023.01.015

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Research progress on clinicopathological and genetic alterations of liposarcoma

LI Saiyang, BAO Junjie, QU Guofan   

  1. Harbin Medical University Cancer Hospital,Harbin 150081,China
  • Received:2022-10-22 Revised:2023-01-13 Online:2023-02-28 Published:2023-03-21

Abstract: Liposarcoma is a malignant tumor originating from primitive mesenchymal cells,which has remarkable tissue diversity and consists of cells with different degrees of differentiation and atypia.Liposarcoma is mainly divided into four subtypes:atypical lipogenic tumors(ALT)with MDM2-HMGA2 as the key gene/well-differentiated liposarcoma(WDLPS)and dedifferentiated liposarcoma(DDLPS),myxoid liposarcoma(MLPS)/round cell liposarcoma(RCLPS)with FUS-CHOP gene fusion as the main mechanism,and pleomorphic liposarcoma(PLPS)with complex and variable pathogenesis.The main pathological changes of ALT/WDLPS are the proliferation of pleomorphic mature adipocytes,DDLPS is high-grade sarcoma,MLPS/RCLPS is mainly composed of non-lipid stromal cells,and PLPS is characterized by atypical multivacuolar adipocytes.The tumor gene and clinicopathological changes contained in these four subtypes lead to the different clinical behaviors,treatment sensitivity and biological characteristics of these four subtypes.This paper summarizes and discusses the pathological and genetic changes of these four subtypes.

Key words: Liposarcoma, Pathology, Immunohistochemistry

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