Different types of liposarcomas, and for comparison, lipomas were investigated for their lipid composition. Triglycerides were the main components of lipomas and lipoma-like liposarcomas. Myxoid liposarcomas had a high water content and contained considerable amounts of free cholesterol and phospholipids. One pleomorphic liposarcoma resembled a myxoid liposarcoma in its lipid composition and water content. In 4 liposarcomas of mixed type the lipid composition resembled the main subtype. A glycerol ether-like fraction was found in all lipoma-like (well differentiated) liposarcomas, in one myxoid type but not in the other types.
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