Thoracolumbar junction intradural disc herniation: Report of a case and literature review

Intradural disc herniation is a rare disease that most commonly occurs in the lumbar region. Less than 5% occur in the thoracic and cervical regions. We report a patient with thoracic intradural disc herniation at T12-L1 who was presented with sudden onset paraparesis due to myelopathy symptoms. The intradural nature of disk herniation was not clearly diagnosed on preoperative MRI, due to poor MRI quality, and it was identified intraoperatively by inspection of the thecal sac. The patient underwent surgery with transdural disk removal and posterolateral interbody fusion with transpedicular T12-L1 fixation and experienced total neurological recovery. The patient gave explicit authorization for the use of photographic material obtained during surgery and medical imaging.