Question 2046
{"accessible":false,"alternatives":[{"id":10164,"text":"contrast in the renal pelvis"},{"id":10165,"text":"meningeal diverticulum with irregular margins"},{"id":10166,"text":"opacification of an epidural collection"},{"id":10167,"text":"tortuous filling defects within the subarachnoid space"}],"archived":false,"correctAlternativeId":10164,"explanation":"\u003cp\u003eVisibility of contrast in the renal pelvis at CT myelography is an indicator of early renal excretion of contrast, which can be seen in patients who have a CSF leak of any cause, including CSF-venous fistula.\u003c/p\u003e\u003cp\u003eAlthough meningeal diverticula are associated with CSF-venous fistulae, they are not of themselves an indicator of their presence. Patients with CSF-venous fistulae do not have epidural CSF collections, and therefore contrast would therefore not opacify one at CT myelography. Tortuous filling defects in the subarachnoid space are a myelographic finding of a spinal dural arteriovenous fistula, not a CSF-venous fistula.\u003c/p\u003e","id":2046,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2047","nextQuestionPath":null,"relatedArticles":[{"id":19640,"title":"Spinal dural arteriovenous fistula","link":"/articles/spinal-dural-arteriovenous-fistula?lang=us"},{"id":1519,"title":"Spontaneous intracranial hypotension","link":"/articles/spontaneous-intracranial-hypotension-2?lang=us"},{"id":61000,"title":"CSF-venous fistula","link":"/articles/csf-venous-fistula?lang=us"}],"alsoUsedIn":[{"id":918,"kind":"Course","title":"Neuroradiology Lectures - page 918","link":"https://radiopaedia.org/courses/neuroradiology-lectures/pages/918"},{"id":918,"kind":"Course","title":"2021 Virtual Conference Private Use - page 918","link":"https://radiopaedia.org/courses/2021-virtual-conference-private-use/pages/918"},{"id":918,"kind":"Course","title":"Radiopaedia 2021 - isoCME - page 918","link":"https://radiopaedia.org/courses/radiopaedia-2021-isocme/pages/918"},{"id":918,"kind":"Course","title":"New test course - page 918","link":"https://radiopaedia.org/courses/new-test-course/pages/918"},{"id":1203,"kind":"Course","title":"2022 Virtual Conference Private Use - page 1203","link":"https://radiopaedia.org/courses/2022-virtual-conference-private-use/pages/1203"},{"id":1259,"kind":"RestrictedPage","title":"Page 1259 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1259"},{"id":1272,"kind":"RestrictedPage","title":"Page 1272 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1272"},{"id":1285,"kind":"RestrictedPage","title":"Page 1285 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1285"},{"id":1290,"kind":"RestrictedPage","title":"Page 1290 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1290"},{"id":1303,"kind":"RestrictedPage","title":"Page 1303 (in no courses)","link":"https://radiopaedia.org/admin/restricted_pages/1303"}],"stem":"\u003cp\u003eWhich finding on CT myelography is suggestive of the presence of a CSF-venous fistula?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/2046"}],"attemptsPercentages":[{"alternativeId":"10164","percentage":55},{"alternativeId":"10167","percentage":18},{"alternativeId":"10166","percentage":9},{"alternativeId":"10165","percentage":18}],"promptToLogin":false,"questionManager":false,"articleId":"myelography"}