Origin and classification of soft tissue tumors -- Soft tissue tumors in a large referral population: prevalence and distribution of diagnoses by age, sex, and location -- Imaging of soft tissue tumors -- Lipomatous tumors -- Vascular and lymphatic tumors -- Fibrous and fibrohistiocytic tumors -- Muscle tumors -- Neurogenic tumors -- Synovial tumors -- Extraskeletal osseous and cartilagenous tumors -- Tumors of uncertain histogenesis -- Superficial soft tissues masses -- Mass which may mimic soft tissue tumors -- Compartmental anatomy.