Venous distention sign of intracranial hypotension
Low grade headache only
MRI 1.5 Tesla + C
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Patient with headache resistant to the therapy and persistent for over one month.
The MRI scan showed subdural bilateral and symmetric fluid with imaging intensity higher than the CSF liquid and no hemorrhagic signs.
After iv contrast injection there was no sign of leptomeningeal or parenchymal enhancement but only a homogeneous and symmetric dural enhancement. On the sagittal images you can note a round shape of the inferior border of the transverse venous sinus (venous distension sign ) and a reduction of the distance between the optic chiasma and the pituitary gland.
- Farb RI, Forghani R, Lee SK et-al. The venous distension sign: a diagnostic sign of intracranial hypotension at MR imaging of the brain. AJNR Am J Neuroradiol. 2007;28 (8): 1489-93. AJNR Am J Neuroradiol (full text) - doi:10.3174/ajnr.A0621 - Pubmed citation
- Rabin BM, Roychowdhury S, Meyer JR et-al. Spontaneous intracranial hypotension: spinal MR findings. AJNR Am J Neuroradiol. 1998;19 (6): 1034-9. AJNR Am J Neuroradiol (abstract) - Pubmed citation