Myxoid Liposarcoma Liposarcomas occur most commonly during adult life, and are extremely rare in children and infants. There is no upper age limit. There is a slight male predilection, but no association with race race or geography. The tumors grow insidiously and have often reached large size before treatment is sought.
Symptoms are few and vary according to anatomic site.
The tumors arise from primitive mesnchymal cells rather than adipocytes, and this explains their usual origin in deep fascial planes rather than in subcutaneous fat. There is no association with lipomas. The clinical behavior closely reflects the microscopic appearance and therefore correct subclassification is crucial to selection of therapy. Myxoid liposarcoma is by far the most common type, accounting for about half of liposarcomas. Recurrence is common for all types, and is probably due to infiltration and formation of daughter tumors which are not removed since liposarcomas are so deceptively encapsulated-appearing .