Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

Abstract: Lesions in the pedicles of the cervical spine are both a diagnostic and technical challenge. An osteoid osteoma of the pedicle of the fourth cervical vertebra occurred in a 17-year-old girl. Resection of the tumor adjacent to the dura medially and the vertebral artery anterolaterally was accomplished via a transpillar approach. The transosseus approach preserved the facet joints and posterior elements and obviated the need for an interbody fusion.
Osteoid osteoma in a cervical pedicle. Resection via transpillar approach.

Abstract: The best treatment for diseases of the hip can begin if one diagnoses the disorder as soon as possible after onset. In many cases, successful management of the disease will prevent permanent damage to the hip joint. If injury occurs to the developing hip joint, major hip surgery may be necessary in adult life.
Diseases of the developing hip joint.

Abstract: Myxomas are predominantly located in the right on left atrium. We report an unusual case of a myxoma adherent to the aortic valve. The child presented with symptoms of subaortic stenosis. By invasive methods a tumor was diagnosed located at the aortic valve. After surgical removal the child recovered soon and is doing well. According to our knowledge this is the first report of a myxoma of the aortic valve.
Myxoma of the aortic valve in a child.