Osteosarcoma: A Malignant Tumor of Mesodermal Connective Tissue

Pathologic osteosarcoma is a malignant tumor of mesodermal connective tissue, usually occurs from bone and rarely occurs from soft tissue (Dahlin, 1975). It is defined as the presence of proliferative malignant mesenchymal cells that produce bone morphology and / or immature bone (Gaeta, 1988). Osteosarcoma is most common in the medullary canal of the metaphysis of long tubular bone. However, it may also appear on the bone surface (Gurfunkle, 2007). Most osteosarcoma develops in the limb bone and only 10% of the axon bone is generated.

Bone cancer is a bone malignant (cancer) tumor that destroys normal bone tissue. Not all bone tumors are malignant. In fact, benign (noncancerous) bone tumors are more common than malignant tumors. Neither malignant bone tumor nor benign bone tumor can grow healthy bone tissue and squeeze it, but it will not spread benign tumor, never destroy bone tissue nor threaten life. Malignant tumors arising from bone tissue are called primary bone cancer. Cancers that metastasize (metastasize) from other parts of the body, such as breast, lung, prostate, etc., are called metastatic cancers and are named after the organ or tissue from which it begins. Primary bone cancer is not as common as cancer spreading in bone

Bone cancer is a malignant tumor arising from the cells that make up the bones of the body. This is also known as primary bone cancer. Primary bone tumor is a tumor that appears in the bone tissue itself and is benign or malignant (bone cancer). Benign benign (noncancerous) tumors are more common than bone cancers. When cancer occurs in bone, the cancer occurs in bone (like primary bone cancer), or it occurs in other parts and then transfers to bone (metastasis or secondary metastasis to cancer ). In fact, when cancer is detected in the bone it usually starts with another organ or part of the body and then spreads to the bone. This cancer that metastasizes to the bone is named after the name of the site where the original cancer began (for example, metastatic prostate cancer metastasized to bone). Breast cancer, prostate cancer, and lung cancer are types of cancers that metastasize to the bone at an advanced stage.

The tumor may be benign or malignant. Benign tissue is not cancer. It does not spread to the body nor damage the surrounding tissues. Malignant tissue is cancer. Malignant tissue consists of a chemical carcinogen (a substance that causes cancer) that attacks cellular DNA, causing a mistake in the cytogenetic code. These cells divide very quickly and therefore damage nearby tissues. They can also spread and invade other parts of the body through a process called metastasis. During transport, the cells detach from the tumor and enter the bloodstream. They transport through the body and create new tumors. (What do you need in the US ...)