Unusual presentation of thoracic disc herniation.

We report a 57 year- old man with lateral abdominal wall bulging. MRI showed thoracic disk herniation at the T11-T12 level. Needle electomyogram disclosed acute denervation in paraspinal and abdominal muscles innervated from T11 root. Eight months later the swelling was reduced significantly. Thoracic disc herniations are rare and three similar cases have been described previously.