Soft Tissue Masses

Abstract

The chapter is divided in two parts: the fi rst part discusses benign masses and the second addresses malignancies. Vascular lesions are discussed, differentiating between high-fl ow and low-fl ow lesions. Fatty lesions, neurofibromas, tumoral calcinosis, and myositis ossifi cans are described in detail, and hematomas, popliteal cysts, and other lesions are presented more briefl y. The following section on malignant masses focuses on sarcomas and other fi brous tumors. The discussion of sarcomas includes infantile fi brosarcoma, synovial sarcoma, rhabdomyosarcoma, lymphoma/leukemia, as well as lesions such as epithelioid sarcoma, granulocytic sarcoma, liposarcoma, extraskeletal Ewing sarcoma/osteosarcoma, and hemangiopericytoma.