A rare non-Hodgkin lymphoma or even more rarely, a Hodgkin lymphoma that arises from the bone, without lymph node or other extranodal involvement. The femur, spine, and pelvic bones are the most commonly affected sites. The majority of patients present with bone pain in the affected area. A single bone or multiple skeletal sites may be involved. The prognosis is related to the cell type and the stage of the disease. The disease is Monarch Disease Ontology term MONDO_0017814 (primary bone lymphoma). Also known as: bone tissue lymphoma, lymphoma of bone, lymphoma of bone tissue, lymphoma of the bone, primary lymphoma of bone, primary lymphoma of the bone.