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Improved spontaneous intracranial hypotension after surgery. A midline sagittal T2-weighted image of the brain performed 1 week after ligation of the cerebrospinal fluid-lymphatic fistula demonstrates improved imaging features of spontaneous intracranial hypotension characterized by slightly diminished tonsillar ectopia (single arrow), normal triangular morphology of the transverse sinus (double arrows) and near normalization of the pontomesencephalic angle (arrowhead)
