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Periosteal Osteosarcoma
General Information Periosteal osteosarcoma is a distinct type of surface osteosarcoma (arises from the surface of the bone/periosteum) It arises from the inner layer of the periosteum and therefore elevates the periosteum and produces a periosteal reaction Periosteal...
Parosteal Osteosarcoma
General Information Parosteal osteosarcoma is a low grade, well differentiated fibroblastic tumor that produces bone/osteoid (immature woven bone). It arises from the surface of the bone, namely the outer layer of the periosteum. It is slow growing and slow to...
Low Grade Intraosseous Osteosarcoma
GENERAL INFORMATION Low Grade Intraosseous Osteosarcoma is a low grade malignant bone tumor that accounts for 1% to 2% of all Osteosarcomas. Constituent cells of the tumor form osteoid or immature woven bone. CLINICAL DATA • More frequent in second and...
Telangiectatic Osteosarcoma
General Information Telangiectatic osteosarcoma is a variant of an intramedullary high grade osteosarcoma. Accounts for 3% of osteosarcomas Telangiectatic osteosarcoma is extremely lytic on X-rays. It demonstrates very little osteoid production. It is characterized by...
Osteoma
GENERAL INFORMATION Osteoma is a rare benign bone tumor, composed of mature osseous tissue. It presents as a protruding mass of dense periosteal intramembranous bone, usually on surface of host bone. It is abnormally dense but is normal bone formed in the...
Osteoid Osteoma
General Information Osteoid Osteoma is a benign osteoblastic (bone forming) tumor that is usually less than 2cm in size. It consists of a central vascularized nidus that represents the neoplastic tissue. The nidus is surrounded by normal reactive bone. It is usually a...