Spindle cell lipoma (report of 2 cases and differential diagnosis).

"Spindle Cell Limpoma" is a benign tumor consisting of immature mesenchymal spindle cells with occasional collagen fibers, myxoid areas and lipocytes scattered throughout in varying numbers. Only focally it shows the typical appearance of a lipoma. Therefore it may be confused with liposarcoma, fibrosing lipoma, furthermore with areas of fibrous histiocytoma or nodular fasciitis showing fat infiltration.