Vascular Tumors

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Vascular Tumors

Prognosis Hemangiomas → benign lesions Hemangioendothelioma → good prognosis Angiosarcoma → poor prognosis 51.1 Characteristics of the Single Entities 51.1.1 Hemangioma of Bone Definition: Benign solitary tumor composed of newly formed vessels. Epidemiology: Rare tumors, accounting…

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Parosteal Osteosarcoma

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Parosteal Osteosarcoma

Localization: Almost exclusive of the long bones, it originates from the metaphysis. Rare in the diaphyses, exceptional in flat bones. The most typical site is the distal metaphysis of the…

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Liposarcomas

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Liposarcomas

Localization: Anywhere there is fat. Most common in thigh, retroperitoneum, inguinal region, and popliteal fossa. Never in the hands, feet, and neck. Clinical: Insidiously growing, deep-seated, ill-defined mass that usually…

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Chordoma

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Chordoma

Location: 85 % in the sacrococcyx or in the spheno-occipital region. Fifteen percentage in the vertebral body. Clinical: Early symptoms in C. of the base due to compression of the…

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Myositis Ossificans

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Myositis Ossificans

Clinical: Posttraumatic type: painful enlarging mass with intense inflammation of the surrounding tissues. If the involved anatomic compartment is immobilized, inflammation resolves, and the mass slowly regresses. Complete maturation of…

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Extraskeletal Myxoid Chondrosarcoma

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Extraskeletal Myxoid Chondrosarcoma

Location: Deep-seated, proximal extremities and trunk. Clinical: Enlarging painless soft tissue mass. Imaging: Although imaging characteristics are nonspecific, most tumors appear lobulated, and highly myxoid tumors have a homogeneous high…

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Alveolar Soft Part Sarcoma

Aug 7, 2016 by in MUSCULOSKELETAL IMAGING Comments Off on Alveolar Soft Part Sarcoma

Location: Deep-seated, lower limb within the muscle, thigh. Clinical: Globose or multinodular mass, slowly increasing, and painless. Tumor may be large, present from many years, and richly vascularized with pulsation…

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