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Osteosarcoma
Can osteosarcoma be cured?
Osteosarcoma is a malignant tumor of the bone, commonly occurring in adolescents and young adults, primarily near the proximal end of the tibia, the distal ancient end, or near the proximal end of the humerus, most frequently seen at the end of the bone shaft. In the early stages, there are no symptoms, and once detected, it is usually in the middle to late stages. An X-ray examination can be used for diagnosis, often showing a Codman's triangle or a sunburst pattern. Osteosarcoma generally needs early detection and treatment. If a primary lesion is present, surgical treatment can be pursued, including procedures such as resection with inactivation and reimplantation or limb-sparing surgery with a prosthesis. Another option is amputation, followed by extensive chemotherapy. The likelihood of osteosarcoma spreading to the lungs is very high. In recent years, with early diagnostic physical examinations and the rapid development of chemotherapy, the five-year survival rate for osteosarcoma can reach 50%.
How long is the latent period of osteosarcoma?
In clinical practice, there is no such thing as a latency period for malignant bone tumors, because these tumors progress very quickly. So, if you experience symptoms such as swelling and pain in the affected limb, if you can feel a mass, and if the pain severely impacts your daily life, you should promptly go to a hospital to get an imaging test done to determine whether a bone tumor is present. Only through imaging and accurate diagnosis can early diagnosis and treatment be achieved, which is the best treatment approach for osteosarcoma. Therefore, in clinical practice, there is no concept of a latency period for malignant bone tumors.
Is osteosarcoma bone cancer?
Osteosarcoma is a type of malignant tumor that originates from the bone. Bone cancer is a common term used by people to refer to bone tumors. The terms cancer and sarcoma are different mainly because of their different origins. Cancer primarily originates from epithelial tissue, such as liver cancer, lung cancer, etc. Because bones consist of mesenchymal cells, malignant tumors of the bone are called osteosarcomas, not bone cancer. Osteosarcomas commonly occur in children and adolescents and are a highly malignant type of bone tumor that require prompt treatment once diagnosed.
What are the symptoms of osteosarcoma?
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.
Do benign osteosarcomas use chemotherapy?
First of all, all osteosarcomas are malignant; osteosarcoma is a type of malignant tumor with no benign variant. Regarding the treatment of osteosarcoma, the first step is chemotherapy. After confirming the diagnosis through pathological examination and confirming it is osteosarcoma, The first step is chemotherapy, which can stabilize the tumor cells; Then, the main tissue is surgically removed, as well as the surrounding infiltrated soft tissue; The third step is to use chemotherapy again to eliminate the residual cancer cells. This treatment protocol of chemotherapy-surgery-chemotherapy is currently the most common and advanced method in the country. It can significantly improve the patient's survival rate, reduce the risk of amputation, and can also prevent the recurrence of osteosarcoma.
The common sites of osteosarcoma
Osteosarcoma commonly occurs in the long tubular bones of the limbs, such as the femur, tibia, and humerus, especially near the joints of these long bones where the incidence is highest. In children, the distal femur and proximal tibia account for about three-quarters of all bone tumors. Osteosarcoma can also occur in the proximal humerus, the spine, and the ribs, although it is less common in these locations. The most frequent sites remain the long tubular bones in the limbs.
Osteosarcoma imaging manifestations
The radiological features of osteosarcoma start with an introduction to X-ray imaging. X-rays can show typical new bone formation and bone destruction, which are characteristic features of X-rays. Destruction of bone trabeculae can also be seen on X-rays. Additionally, the density of the tumor tissue increases, leading to a characteristic X-ray known as the Codman's triangle, which occurs when the tumor penetrates the bone and pushes up the periosteum, creating a unique image of Codman's triangle. The second examination includes CT scans and MRI, which are primarily used to determine the nature and extent of the bone tumor, and whether there is infiltration into the surrounding soft tissues. The third radiological examination is a nuclear bone scan, which is primarily important for determining whether the myeloma has metastasized to distant sites.
How to alleviate the pain of osteosarcoma?
Pain in osteosarcoma patients is mostly caused by the cancer invading local bone tissue and other tissues, leading to pain, tenderness, and even sleeplessness. Therefore, the pain management follows a certain hierarchy, starting with non-steroidal anti-inflammatory drugs, followed by weak opioids, and finally strong opioids such as morphine. However, this only alleviates the pain and does not help with treatment. For early-stage osteosarcoma patients, pain management primarily involves surgery when necessary. For advanced-stage patients, it involves gradually increasing the dose of effective pain-relief medications to alleviate temporary pain. (Controlled drugs must be strictly used under the supervision of relevant physicians.)
Are osteosarcomas sensitive to radiotherapy and chemotherapy?
Osteosarcoma is generally insensitive to radiotherapy, hence radiation therapy is not used for such diseases in clinical settings. Similarly, these diseases have a moderate sensitivity to chemotherapy, necessitating the use of relatively high doses of chemotherapy during treatment. The main mechanism of chemotherapy involves using a series of cytotoxic drugs to inhibit tumor growth. Although high-dose chemotherapy can effectively kill tumor cells, it can also damage some of the patient's normal cells, leading to severe reactions. If radical surgery is viable for these patients, then curative surgery is the preferred method of treatment.
Does osteosarcoma hurt when pressed?
Osteosarcoma, also known as osteogenic sarcoma, is a primary malignant tumor of the bone. It ranks second in incidence among bone tumors and has a relatively high incidence and malignancy rate. It is more common in adolescents and occurs more frequently in males than in females. The earliest clinical symptoms of this disease include dull pain and persistent pain that worsens with activity, as well as nighttime pain, which is more pronounced than daytime pain. This is a very important characteristic, indicating that patients experience nighttime pain and rest pain. The affected area may develop a rapidly growing mass that changes significantly in size from month to month. If the tumor grows large, pressing on it can cause pain, but in the early stages when the tumor is not very large, the tenderness may not be very apparent, presenting only as localized spontaneous pain, which requires attention.