Article Figures & Data
Figures
- Fig 1.
Sagittal T1 brain (A–C) and sagittal T2-weighted cervical spine (D–F) imaging. Initial MR imaging from June 2016 (A and D) shows classic intracranial findings of SIH with low-lying cerebellar tonsils, effacement of the prepontine cistern, enlarged pituitary, and brain stem sagging. Spine imaging findings are normal. Follow-up MRIs from June 2018 (B and E) show similar brain findings with interval development of a large cervicothoracic syrinx. Postoperative MRIs from June 2019 (C and F) reveal complete resolution of intracranial SIH sequelae, with a normal position of the cerebellar tonsils and resolution of spinal syrinx.
- Fig 2.
MR myelogram axial T1 VIBE (A) demonstrates early contrast opacification of the renal collecting system (dashed circles). CT myelogram (B) demonstrates an irregular left T7–T8 perineural cyst without evidence of an opacifying paraspinal vein. No renal contrast excretion was identified on CT myelography. MR myelogram axial T1 VIBE (C) shows a spinal meningeal diverticulum with an opacifying paraspinal vein (arrows) draining into the azygous system, consistent with a CSF-venous fistula.
- Fig 3.
CT and MR myelogram images from case 2. A, CT myelogram reveals perineural cysts at T8–T9 without opacification of the left-sided cyst. B, MR myelogram axial T1 VIBE demonstrates opacification of the left-sided spinal meningeal diverticulum and left paraspinal vein draining into the azygous system (arrows), consistent with a CSF-venous fistula.
