Surgical Pathology Criteria

Atypical Lipomatous Tumor

Controversy about terminology:

Well Differentiated Liposarcoma vs. Atypical Lipomatous Tumor

As used, these are equivalent terms

Arguments in favor of the term Well Differentiated Liposarcoma

Arguments in favor of the term Atypical Lipomatous Tumor

Some use ALT for deep-seated lesions and WDL for superficial lesions

We prefer the term Atypical Lipomatous Tumor but frequently add the term Well Differentiated Liposarcoma in parentheses to avoid confusion

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