Clinical she was felt to have a tumor. This T12 lesion was removed in the operating room and was found to be an osteoid osteoma. The most common form of scoliosis is idiopathic scoliosis, which is most commonly seen in adolescent girls. It is a thoracic scoliosis convex to the right. It should never be painful.
Any scoliosis associated with pain needs further work up, starting with a bone scan.
In addition, a thoracic scoliosis convex to the left should also be worked up at they are often also associated with tumors. Osteoid osteoma is a benign tumor containing osteoid in a stroma of loose vascular connective tissue. It arises in the posterior elements of the vertebral body. It is seen in children ages 6-17. Its pain is classically relieved by aspirin.