Figure 1.

Study organization. Flow chart showing numbers of patients and tumor sub-types included in each part of the study. Well-differentiated liposarcomas refer to fatty neoplasms corresponding histologically with differentiated adipocytic tumors closely resembling mature fat, and dedifferentiated liposarcomas as more solid to myxoid tumors corresponding histologically with non-lipogenic, usually pleomorphic, tumors. In this study, closely intermingled tumors refer to intermingled well- and dedifferentiated components, which can be seen histologically.