A 41-year-old male came with complaints of back pain radiating to both lower limbs which was gradually progressive, worsened on walking. Paresthesia in both lower limbs for 3 months. He developed urinary incontinence and constipation for 2 months.
There was no history of fever, cough, weight loss or loss of appetite. There was no history of trauma. On examination there was absent ankle jerk bilaterally and S1-S5 hypoaesthesia with perianal sensory loss.
Chest radiograph and abdominal screening showed no abnormality.
A plain CT and CE-MRI of the sacral spine were performed.
