What are the symptoms of osteosarcoma?

Written by Wang Cheng Lin
Orthopedics
Updated on January 10, 2025
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Symptoms of Osteosarcoma:

The first is pain at the site of occurrence. This pain may be intermittent and not very pronounced in the early stages. As the condition progresses, the severity of the pain gradually increases, transitioning from intermittent to persistent pain;

The second is the formation of a lump. You can feel a lump on the limb with your hand, and this lump is clearly tender to the touch;

The third is limping, which is mainly caused by the pain in the limb;

The fourth is the most common systemic symptoms. Patients with this malignant tumor will exhibit fever, weight loss, anemia, and pathological fractures.

These are the main symptoms of osteosarcoma currently observed in clinical settings.

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How is osteosarcoma formed?

The causes of osteosarcoma are not yet definitively determined, but it is generally believed to be closely related to trauma, genetics, and living environment. Osteosarcoma typically occurs in adolescents and is a highly malignant disease. If not treated promptly, it can lead to death within three to six months. After the diagnosis of osteosarcoma, amputation through surgery is the only effective treatment method. Amputation may extend the patient's survival period, but there is a high risk of recurrence, which can lead to death.

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Osteosarcoma is malignant.

Regarding whether osteosarcoma is benign or malignant, it is certain that osteosarcoma is a malignant tumor with a very high degree of malignancy. Once osteosarcoma is definitively diagnosed, aggressive treatment is necessary. Surgery is the main treatment approach, aiming to perform as extensive a resection as possible, or amputation may be required when necessary. After surgery, the resected specimen must be sent for pathological examination. Based on the type of pathology, the next step in treatment, either radiotherapy or chemotherapy, will be determined to minimize the recurrence of osteosarcoma, as a recurrence can endanger the patient's life.

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Can osteosarcoma be detected by X-ray?

Osteosarcoma can be detected with an X-ray, which is a very important method for diagnosing osteosarcoma. Since osteosarcoma typically comes in three types—osteoblastic, osteolytic, and mixed—the appearances on the X-rays are generally different. Osteolytic osteosarcoma mainly involves bone destruction, osteoblastic is characterized by bone regeneration, and the mixed type has both bone destruction and regeneration. Secondly, osteosarcoma primarily erodes the bone quality, and the periosteal reaction is very apparent. Typical osteosarcomas often show signs like Codman's triangle or the sunburst appearance. Therefore, if symptoms such as redness and increased temperature of the skin, along with a bony lump, occur around the distal femur, proximal tibia, or proximal humerus, it is best to first go to the hospital for an X-ray. X-rays are currently the most economical and necessary diagnostic tool for osteosarcoma.

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Osteosarcoma etiology

Currently, in clinical practice, the pathogenesis of osteosarcoma is not fully understood. However, it may be related to genetics, exposure to radioactive materials, and viral infections. It can also be secondary to other deformative osteitis, fibrous dysplasia, and some benign tumors transforming into malignant bone tumors. Osteosarcoma primarily occurs in the metaphysis of long bones. The tumor spreads along the marrow cavity, extending towards both the metaphysis of the long bones and the diaphysis of the bones. Once the tumor breaks through the bone shaft, it rapidly destroys the cortical bone, spreads under the periosteum, and invades the surrounding soft tissues outside the eardrum, damaging the surrounding muscles and soft tissues.

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Can osteosarcoma occur on the knee?

Can osteosarcomas grow on the knee? In fact, the locations where osteosarcomas commonly appear are indeed near the knee. There are mainly three common sites: the most prevalent is the distal end of the femur, the lower part of the thigh bone. The second most common site is the proximal end of the tibia. The third is the proximal end of the humerus. Therefore, osteosarcomas usually do grow near the knee. What are the symptoms of an osteosarcoma? The symptoms of osteosarcoma include, first, localized pain, which is a constant pain that persists, worsens, and does not alleviate, often causing night pain, and many patients do not feel pain during the day, only at night. The second symptom is a localized lump, generally spindle-shaped, with an increased skin temperature over the surface, and even distended veins due to the tumor restricting nearby joint movement. The third symptom is the appearance of cachexia or wasting syndrome throughout the body. The fourth point is that the growth of the osteosarcoma leads to erosion of the bone and eventually pathologic fractures. Thus, the likelihood of osteosarcomas appearing near the knee is very high, and many patients typically come to the hospital because of painful lumps near the knee, and then, after examination, the diagnosis is confirmed.