Imaging Modalities: Ultrasonography. Color Doppler Ultrasonography. Plain Radiography, Angiography and Computed Tomography. Nuclear Medicine Imaging. MR Imaging. Dynamic Contrast-Enhanced MR Imaging * Staging, Characterization and Grading: Staging. Grading and Characterization of Soft Tissue Tumors. General Imaging Strategy * Imaging of Soft Tissue Tumors: Tumors of Fibrous Tissue. Fibrohistiocytic Tumors. Lipomatous Tumors. Tumors and Tumorlike Lesions of Blood Vessels. Lymphatic Tumors. Tumors of Muscular Origin. Synovial Tumors. Tumors of Peripheral Nerves. Extraskeletal Cartilaginous and Osseous Tumors. Primitive Neuroectodermal Tumors and Related Lesions. Lesions of Uncertain Origin. Pseudotumoral Lesions. Soft Tissue Metastasis. Soft Tissue Lymphoma. Soft Tissue Tumors in the Pediatric Patient. Biopsy of Soft Tissue Tumors * Imaging after Treatment: Posttreatment Assessment of Soft Tissue Tumors.