Paraosseous osteosarcoma

Introduction to para-osteosarcoma Osteosarcoma of the bone is a periosteum that originates from the bone. It grows out of the bone, but tends to wrap around the bone. It is rare. The incidence rate of men and women is similar. Although it can be seen at any age, more than half is greater than 30 years old. basic knowledge The proportion of illness: 0.001% Susceptible people: good for people over 30 years old Mode of infection: non-infectious Complications: anemia

Osteogenic osteosarcoma etiology

Cause:

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.

Osteosarcoma prevention

There are no special and effective preventive measures, and some adjustments can be made in the diet:

1. Maintain an ideal weight.

2. Ingest a variety of foods.

3. The diet includes a variety of vegetables and fruits.

4. Ingest more high-fiber foods (such as whole grain cereals, beans, vegetables, and fruits).

5. Reduce total fat intake.

6. Limit the intake of alcoholic beverages.

7. Limit the intake of marinated, smoked, and nitrite-containing foods.

Osteosarcoma complications Complications anemia

Compression of nerves, blood vessels, late dysfunction, fatigue, weight loss, anemia and other systemic symptoms.

Osteosarcoma symptoms of the bones Common symptoms Diffuse periosteal thickening Periostitis Shoulder joint activity limitation

The clinical symptoms are mild and can be painless. It only shows a mass, and sometimes the mass is very large. For example, it is located behind the lower end of the femur and can affect normal joint activity. The natural course is similar to benign, 75% of the growth is slow, repeated recurrence can be repeated, still survive for more than 5 years, 25% is invasive, biological behavior is similar to sclerotic sarcoma.

Mainly found in the long bones of the metaphysis, especially the distal femur, proximal humerus and proximal humerus.

Examination of osteosarcoma

X-ray examination of many new bone formation nests, slowly growing, tending to assemble into tumor mass, the edge is often lobulated, round, there are small trabecular bone in the tumor, the early boundary with the mother bone is clear, visible strips translucent District, continue to the biological boundaries, deep, dense, uniform, poor invasion, cortical and cancellous bones are not affected; invasive, cortical destruction, erosion of the medullary cavity, the formation of osteolytic areas, between the new bone formation, CT in It is valuable to determine whether or not the medullary cavity has been violated, but the metastasis is late, but there is also a little invasive early metastasis.

Diagnosis and diagnosis of osteosarcoma

diagnosis

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

Differential diagnosis

Osteomyositis and osteoma are difficult to distinguish from post-traumatic calcification and ossifying myositis. The latter is feathery and tends to deposit in soft tissue. A few can be dense, round, and its ossifying mass is more than the muscle side. Osteosarcoma has a low density and has a hardened edge.

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