Sarcoma-a
Osteosarcoma is a malignant primary tumor of bone consisting of malignant stroma with evidence of malignant osteoid, bone, and/or cartilage formation.(43). Osteosarcoma of medullary origin is the most common primary bone tumor in the dog. Noun. 1. osteosarcoma-malignant bone tumor; most common in children and young adults where it tends to affect the femur. osteogenic sarcoma. sarcoma-a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer. osteosarcoma. Also called osteogenic sarcoma. A form of bone cancer arising in the long bone of a limb. Osteoblasts (bone cells) multiply and form tumors. Bone Tumors. Bones are made of several different cell types, including cartilage, blood cells, fat, fibrous connective tissue and the calcium-depositing bone cells (osteoblasts). Any of these cell types are capable of developing into a tumor. 1. osteosarcoma-malignant bone tumor; most common in children and young adults where it tends to affect the femur. osteogenic sarcoma. sarcoma-a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer. Osteosarcoma is a primary malignancy of bone. The malignant cells produce osteoid. Histologically the tumor is composed of malignant osteoblasts which produce osteoid Most occur in the metaphysis of long bones especially about he knee. Age - 10 to 20 years. osteosarcoma. Also called osteogenic sarcoma. A form of bone cancer arising in the long bone of a limb. Osteoblasts (bone cells) multiply and form tumors. Osteogenic sarcoma (osteosarcoma) is the most common primary tumor of bone. It accounts for approximately 19% of all malignant tumors of the bone. Of all the molecular targets altered during the genesis of osteosarcoma, the retinoblastoma gene (RB1) shows the highest frequency of inactivation. Giant cell tumor of bone: This type of primary bone tumor has benign and malignant forms. The benign (non-cancerous) form is most common. Giant cell bone tumors typically affect the leg (usually near the knees) or arm bones of young and middle-aged adults.
http://cal.vet.upenn.edu/projects/saortho/chapter_74/74mast.htm http://www.thefreedictionary.com/osteosarcoma http://www.thefreedictionary.com/osteosarcoma http://www.carelife.com/cancer/animals/bone_tumors.html http://www.thefreedictionary.com/osteoblastic+sarcoma http://www0.sun.ac.za/ortho/webct-ortho/tumors/malignant.html http://www.thefreedictionary.com/osteoblastic+sarcoma http://www.ncbi.nlm.nih.gov/pubmed/17100605 http://www.cancer.org/cancer/bonecancer/detailedguide/bone-cancer-what-is-bone-cancer
common malignant tumor arising from osteoblasts