A female aged 72 years, presented with a history of backache and weakness of the lower leg for 2 months. Sagittal MRI showed posterior extradural mass at Th4 level and CT showed destruction of the lamina at Th4.
Gradually paralysis of the lower leg increased, so laminectomy of Th3-5 was performed 12 days after admission. A hard mass-like tumor with adhesion to the dura, and white pus was found at surgery.
Pathology was tuberculosis, and acid-fastended bacteria were detected in the pus. Five months after the operation, the patient made a good neurological recovery and could walk with the aid of a cane.
