Primary bone cancer -- cancer that actually starts in bone tissue -- is relatively rare. Bone cancer can occur in any of the bones of the body, but it occurs most often in the long bones of the arms and legs.
While it can occur at any age, the most common types occur in children and young adults.
TYPES OF BONE CANCERS
Primary bone cancer, which means cancer that actually starts in bone tissue, is relatively rare. About 2,400 cases are diagnosed every year. Primary bone cancer can occur in any of the 206 bones of the adult human body, but it occurs most often in the long bones of the arms and legs. Although bone cancer can occur at any age, the most common types occur in children and young adults.
Bone cancers form in the cells that make hard bone tissue. Cancers that arise in the cells produced in the bone marrow, such as leukemia, multiple myeloma, and lymphoma, are not considered bone cancers, although they do affect the bone and may require orthopedic management.
Benign (noncancerous) bone tumors are more common than malignant (cancerous) ones. Although benign tumors do not spread, and are rarely life threatening, both types may grow and compress healthy bone tissue and absorb or replace it with abnormal tissue.
Osteosarcoma
Osteosarcoma is the most common type of primary bone cancer, making up 35 percent of bone cancer cases. This cancer affects primarily children and young adults between the ages of 10 and 25. Osteosarcoma often starts in the ends of bones, where new tissue forms as children grow. It arises most often in the knee.
Chondrosarcoma
Chondrosarcomas, one of the most common types of bone cancer in adults over age 50, form in cartilage -- usually around the pelvis, knee, shoulders, or upper part of the thighs. These cancers make up 26 percent of all bone cancer cases.
Ewing's Sarcoma
Ewing's sarcoma occurs most often in the middle part of bones, arising most often in the hip, ribs, upper arm, and thighbones. Like osteosarcoma, this cancer affects primarily children and young adults between the ages of 10 and 25. Ewing's sarcoma is responsible for 16 percent of bone cancer cases.
Rarer Bone Cancers
The following types of bone cancer are rare, and occur primarily in adults:
• Fibrosarcomas usually appear in the knee or hip area. They can arise in older patients after radiation therapy for other cancers.
• Adamantinomas usually occur in the shinbone.
• Chordomas are found most often in the sacrum -- the lower part of the spine, also known as the tailbone.
While it can occur at any age, the most common types occur in children and young adults.
TYPES OF BONE CANCERS
Primary bone cancer, which means cancer that actually starts in bone tissue, is relatively rare. About 2,400 cases are diagnosed every year. Primary bone cancer can occur in any of the 206 bones of the adult human body, but it occurs most often in the long bones of the arms and legs. Although bone cancer can occur at any age, the most common types occur in children and young adults.
Bone cancers form in the cells that make hard bone tissue. Cancers that arise in the cells produced in the bone marrow, such as leukemia, multiple myeloma, and lymphoma, are not considered bone cancers, although they do affect the bone and may require orthopedic management.
Benign (noncancerous) bone tumors are more common than malignant (cancerous) ones. Although benign tumors do not spread, and are rarely life threatening, both types may grow and compress healthy bone tissue and absorb or replace it with abnormal tissue.
Osteosarcoma
Osteosarcoma is the most common type of primary bone cancer, making up 35 percent of bone cancer cases. This cancer affects primarily children and young adults between the ages of 10 and 25. Osteosarcoma often starts in the ends of bones, where new tissue forms as children grow. It arises most often in the knee.
Chondrosarcoma
Chondrosarcomas, one of the most common types of bone cancer in adults over age 50, form in cartilage -- usually around the pelvis, knee, shoulders, or upper part of the thighs. These cancers make up 26 percent of all bone cancer cases.
Ewing's Sarcoma
Ewing's sarcoma occurs most often in the middle part of bones, arising most often in the hip, ribs, upper arm, and thighbones. Like osteosarcoma, this cancer affects primarily children and young adults between the ages of 10 and 25. Ewing's sarcoma is responsible for 16 percent of bone cancer cases.
Rarer Bone Cancers
The following types of bone cancer are rare, and occur primarily in adults:
• Fibrosarcomas usually appear in the knee or hip area. They can arise in older patients after radiation therapy for other cancers.
• Adamantinomas usually occur in the shinbone.
• Chordomas are found most often in the sacrum -- the lower part of the spine, also known as the tailbone.
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