Spontaneous intracranial hypotension from dural tear

(A) Sagittal T2-weighted MRI sequence of thoracic spine shows epidural fluid collection along the ventral surface of the thecal sac (arrows).
(B) Axial image from CT myelogram shows sharp posterior osteophyte (circle) at T2 vertebrae.
(C, D) Axial images from CT myelogram show right posterolateral disc protrusion (thick arrow) and hyperdense contrast from CSF leak ventral to thecal sac (dashed arrows).