Final answer:
Osteoid osteoma is a benign bone tumor that is characterized by a small, round mass of abnormal bone tissue called an osteoid. It is typically found in the long bones and is associated with localized pain that improves with anti-inflammatory medications.
Step-by-step explanation:
Osteoid osteoma is a benign bone tumor that is typically found in the long bones of the body, such as the femur or tibia. It is characterized by a small, round mass of abnormal bone tissue called an osteoid. Osteoid osteoma is often associated with localized pain that is worse at night and improves with anti-inflammatory medications. The diagnosis of osteoid osteoma is confirmed through imaging techniques such as X-rays or CT scans.
One of the key features of osteoid osteoma that helps to differentiate it from other bone tumors is the presence of a central nidus, which is a small, radiolucent area within the tumor. This nidus is made up of highly vascularized connective tissue. In addition to pain relief, treatment options for osteoid osteoma may include surgical removal of the tumor or the use of radiofrequency ablation to destroy the abnormal bone tissue.