医学影像学英文课件：Musculoskeletal Imaging.ppt

* * * * * * * Malignant Tumors Osteosarcoma-Mixed Form Roentgen Feature Combination of osteogenic and osteolytic process Heterogeneous density Periosteal reaction Soft-tissue mass Malignant Tumors Myeloma (Multiple Myeloma) Clinical Feature Primary malignant tumor of bone marrow Age: adults of 50-70y,male Location: vertebral bodies, ribs, skull, pelvis Bence-Jones protein Malignant Tumors Myeloma (Multiple Myeloma) Roentgen Feature Various in extent and pattern Multiple, round and purely osteolytic lesion with various size Well or poorly circumscribed Without sclerosis or periosteal proliferation Expansile and osteolytic lesion in ribs Loss of bone density similar to osteoporosis Malignant Tumors Metastatic Tumor of Bone Clinical Feature Common primary sites: breast, prostate, kidney, thyroid, lung Location: red marrow bone (spine, pelvis, rib, skull, upper ends of humerus and femur) Classification: Osteolytic type, Osteoblastic or sclerotic type and mixed type Malignant Tumors Metastatic Tumor of Bone - Osteolytic Type Roentgen Feature Multiple or single moth-eaten destruction in spongiosa Fusion and enlargement of bone destruction Cortex rupture Without periosteal reaction or soft-tissue invasion Pathological fracture Involvement of both vertebral bodies and pedicles Wedge-shaped compression of bodies Preservation of intervertebral space Scapular and Calvicle Malignant Tumors Metastatic Tumor of Bone - Osteoblastic Type Roentgen Feature Origin: Cancer of prostate,breast,lung,urinary bladder Mottled or nodular ill-defined area of increased density in spongiosa Spiculated type of periosteal new bone response Sclerosis of vertebral bodies and pedicles Malignant Tumors Metastatic Tumor of Bone - Mixed Type Roentgen Feature Changes of both osteolytic and osteoblastic type Degenerative Osteoarthropathy Osteoarthritis (Hypertrophic Arthritis) Clinical Feature Cause: articular cartilage degeneration Classification: Primary(age>40y); Secondary(trauma,infection, isch