Key findings and diagnosis – Findings highly suggestive of intracranial hypotension, which may be due to a lumbar CSF leak in this clinical context are present. There are bilateral subdural haematohygromas, subtle decreased fluid within the optic sheaths, and distention of the dural venous sinuses, particularly the superior sagittal and transverse sinuses. A history of spinal or epidural anaesthesia should be sought, and full spine MRI may be of use
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