Intradural disc herniation at the T1-T2 level.

Intradural disc herniations comprise 0.26-0.30% of all herniated discs. Five percent are found in the thoracic, 3% in the cervical, and 92% in the lumbar region. Although intradural disc herniation may be suspected on preoperatively made CT scans, myelograms, and MRI scans, establishing the diagnosis prior to the surgery is difficult. We present a case of the patient with severe neurological deficits, caused by intradural thoracic disc herniation at T1-T2 interspace, which required surgical treatment. The symptoms were relieved immediately after surgery. This is the first description of an intradural disc herniation at that level.