Dedifferentiated Liposarcoma

**Semantic type:** Neoplastic Process

**Definition:** An atypical lipomatous tumor/well differentiated liposarcoma that shows progression to a usually non-lipomatous, high grade sarcoma. The non-lipomatous sarcoma component may be present in the primary lesion or at the site of recurrence.

**Synonyms:** - DDLPS - Dedifferentiated liposarcoma