Extraosseous osteosarcoma

Introduction to extra-osseous osteosarcoma Osteosarcoma that occurs outside of bone tissue is a rare soft tissue tumor. It is one of the most common malignant osteogenic tumors, and the age of onset is between 15 and 25 years old. More men than women. More common in adolescents, occurs in the dry bones of long bones growing, less backbone, common symptoms are pain, tenderness, swelling or swelling and their compression of nerves, blood vessels caused by symptoms, late dysfunction, systemic symptoms are rare. Microscopically, there is no significant difference between the primary osteosarcoma of the bone, and the osteoblasts, spindle-like cells, multinucleated giant cells, bone-like matrix, bone and shaped chondrocytes. Once the diagnosis is established and there is no tumor metastasis, treatment can begin. At present, most of the above treatments for osteosarcoma generally use a stage of preoperative chemotherapy, and then surgical removal of the lesion. About 80% of patients do not need amputation surgery. After resection of the lesion, various reconstruction techniques continue to be used to restore limb function. basic knowledge The proportion of sickness: 0.0001% - 0.0002% Susceptible people: more common in teenagers Mode of infection: non-infectious Complications: anemia

Extraosseous osteosarcoma etiology

The etiology of this disease is not fully understood yet. It can be grown from the epiphyseal cartilage to the bone surface. It can also originate from the tympanic cell layer or the anterior cartilage fibrous tissue originating from the tendon attachment. In genetics, the abnormalities of chromosomes 8, 11, and 19 are abnormal. It has a certain relationship with the occurrence of osteochondroma.

Extraosseous osteosarcoma prevention

Ingest more high-fiber foods (such as whole grain oats, beans, vegetables and fruits), and limit the intake of pickled smoked and nitrite-containing foods.

Extraosseous osteosarcoma complications Complications anemia

Compression of the nerves, dysfunction may occur in the late stage of the blood vessels, and may have systemic symptoms such as weight loss, fatigue, and anemia.

Extra-osseous osteosarcoma symptoms Common symptoms Knee swelling and pain, ... Wrist pain and palmar flexion... Bone pain, long bone swelling, pain, shoulder joint activity limitation

More common in adolescents, occurs in the dry bones of long bones growing, less backbone, common symptoms are pain, tenderness, swelling or swelling and their compression of nerves, blood vessels caused by symptoms, late dysfunction, systemic symptoms are rare.

Examination of extraosseous osteosarcoma

1. The tumor and the surrounding tissue are clearly visible by the naked eye. The cut surface is granular, grayish or pale yellow, and small hemorrhagic foci can be seen.

2. There is no significant difference between the primary osteosarcoma and the bone. The osteoblasts, spindle-like cells, multinucleated giant cells, bone-like matrix, bone and abnormal chondrocytes can be seen.

Diagnosis and diagnosis of extraosseous osteosarcoma

diagnosis

Diagnosis can be based on medical history, clinical symptoms, and laboratory tests.

Differential diagnosis

Need to identify with cortical osteosarcoma: X-ray film on the tumor and periosteum continuous lesions visible, histologically visible cortical lesions, periosteal osteosarcoma: X-ray film can see the cortical lesions, no lesions in the medullary cavity .

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