NCIt definition : A rare benign bone-forming neoplasm usually arising from the spine. It is a well-circumscribed
lytic tumor that varies in size. The tumor is composed of woven bone trabeculae and
shares similar histologic characteristics with the osteoid osteoma. Surgical curettage
is the treatment of choice. The prognosis is excellent.;
Alternative definition : CDISC: A benign neoplasm of bone, characterized by the formation of osteoid tissue
and large osteoblast-like cells.;