DEFINISI OSTEOSARKOMA PDF

Osteosarcoma is the most common type of cancer that develops in bone. It is aggressive and most commonly occurs in children and young adults. Osteosarcoma is a cancer that starts in the bones. Learn more about osteosarcoma here. Osteosarcoma, is the most common malignant primary bone tumor. Though high Puri, U. Dangi, S. Mandhaniya, T. Maksud and P. M. Parikh. Journal of.

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Cancer starts when cells in the body begin to grow out of control. Cells in nearly any part of the body can become cancer, and can spread to other areas of the body.

To learn more about how cancers start and spread, see What Is Cancer? Osteosarcoma also called osteogenic sarcoma is the most common type of cancer that starts in the bones. The cancer cells in these tumors look like early forms of bone cells that normally help make new bone tissue, but the bone tissue in an osteosarcoma is not as strong as that of normal bones.

Most osteosarcomas occur in children and young adults. Teens are the most commonly affected age group, but osteosarcoma can develop at any age. For information about the differences between childhood cancers and adult cancers, see Cancer in Children.

What Is Osteosarcoma?

In children and young adults, osteosarcoma usually starts in areas where the bone is growing quickly, such as near the ends of the leg or arm bones:. Still, osteosarcoma can develop in any bone, including the bones of the pelvis hipsshoulder, and jaw. This is especially true in older adults. The grade of the tumor tells doctors how likely it is that the cancer will grow and spread to other parts of the body.

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These are the fastest growing types of osteosarcoma. When seen with a microscope, they do not look like normal bone and have many cells in the ossteosarkoma of dividing into new cells. Most osteosarcomas that occur in children and teens are high grade.

Osteosarcoma – Wikipedia

There are many types of high-grade osteosarcomas although the first 3 are the most common. These uncommon tumors fall between high-grade and low-grade osteosarcomas.

They are usually treated the same way as low-grade osteosarcomas. These are the slowest-growing osteosarcomas.

Osteosarkoma – Wikipedia Bahasa Melayu, ensiklopedia bebas

The tumors look more like normal bone and have few dividing ossteosarkoma when seen with a microscope. The grade of the tumor plays a role in determining its stage and the type of treatment used. For more on staging, see Osteosarcoma Stages.

Ewing tumors are the second most common bone cancer in children.

They are described in Ewing Family osteosarkoms Tumors. Most other types of bone definiai are usually found in adults and are rare in children. Many types of cancer that start in other organs of the body, especially cancers in adults, can spread to ostteosarkoma bones. These are sometimes referred to as metastatic bone cancersbut they are not true bone cancers. For example, prostate cancer that spreads to the bones is still prostate cancer and is treated like prostate cancer.

For more information, see Bone Metastasis. Not all bone tumors are cancer. Benign bone tumors do not spread to other parts of the body. They are usually not life threatening and can often be cured by surgery. There are many types of benign bone tumors, including:. Where does osteosarcoma start? In children and young adults, osteosarcoma usually starts in areas where the bone is growing quickly, such as near the ends of the leg or arm bones: Most tumors develop in the bones around the kneeeither in the distal femur the lower part of the thigh bone or the proximal tibia the upper osteowarkoma of the shinbone.

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Osteosarkoma

The upper arm bone close to the shoulder proximal humerus is the next most common site. High-grade osteosarcomas These are the fastest growing types of osteosarcoma. Osteoblastic Chondroblastic Fibroblastic Small cell Telangiectatic High-grade surface juxtacortical high grade Other high-grade osteosarcomas include: Periosteal juxtacortical intermediate grade Low-grade osteosarcomas These are the slowest-growing osteosarcomas.

Parosteal juxtacortical low grade Intramedullary or intraosseous well differentiated low-grade central The grade of the tumor plays a role in determining its stage and the type of treatment used. Other types of bone tumors Several other types of tumors can start in the bones. Malignant cancerous bone tumors Ewing tumors are the second most common bone cancer in children. Chondrosarcoma cancer that develops from cartilage Malignant fibrous histiocytoma MFH of bone, also known as undifferentiated pleomorphic sarcoma of bone Fibrosarcoma Chordoma Malignant giant cell tumor of bone For more ostteosarkoma on these cancers, see Bone Cancer.

Benign non-cancerous bone tumors Not all bone tumors are cancer. There osteosarkoms many types of benign bone tumors, including: Osteoma Chondroma Osteochondroma Eosinophilic granuloma of bone Non-ossifying fibroma Enchondroma Benign giant cell tumor of bone Lymphangioma.

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