" /> Atypical Lipomatous Tumor/Well Differentiated Liposarcoma - CISMeF





Preferred Label : Atypical Lipomatous Tumor/Well Differentiated Liposarcoma;

NCIt synonyms : Atypical Lipomatous Tumor; Atypical Lipoma; Well-Differentiated Liposarcoma; ALT/WDLPS; Well Differentiated Liposarcoma; ALT; Atypical Lipomatous Tumor/Well-Differentiated Liposarcoma;

NCIt related terms : Liposarcoma, well differentiated; Liposarcoma, differentiated;

CISMeF acronym : ALT;

NCIt definition : A locally aggressive mesenchymal neoplasm composed either entirely or partly of an adipocytic proliferation showing at least focal nuclear atypia in both adipocytes and stromal cells. Atypical lipomatous tumor and well-differentiated liposarcoma are synonyms describing lesions that are morphologically and genetically identical. Amplification of MDM2 and/or CDK4 is almost always present. (WHO 2020);

Neoplastic status : Undetermined;

ICD-O code : 8850/1; 8851/3;

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30/07/2025


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