{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T11:38:16Z","timestamp":1761824296220,"version":"3.44.0"},"reference-count":19,"publisher":"BMJ","issue":"5","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2021,4,29]]},"published-print":{"date-parts":[[2021,5]]},"abstract":"<jats:p>We present two cases of 17-year-old man and 10-year-old boy presenting with subarachnoid haemorrhage and a history of road traffic accident. One patient had dissecting aneurysm of the posterior cerebral artery (PCA), and the other patient had partially thrombosed aneurysm on CT angiography. On digital subtraction angiography of the second patient, there was formation of PCA pontomesencephalic vein pial arteriovenous fistula (PAVF). Both the patients underwent endovascular treatment: stent-assisted coiling for aneurysm and coiling with parent vessel occlusion for PAVF. There were no procedural complications. Follow-up angiography showed no residual aneurysm or fistula. Trauma is one of the recognised causes of dissection, and intracranial dissections can present as stenotic lesions, aneurysms or fistulas, depending on the pathology. Traumatic dissecting PCA aneurysm has been reported in only two case reports previously, and post-traumatic PAVF in PCA has not been reported.<\/jats:p>","DOI":"10.1136\/bcr-2020-237722","type":"journal-article","created":{"date-parts":[[2021,5,20]],"date-time":"2021-05-20T11:17:24Z","timestamp":1621509444000},"page":"e237722","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Traumatic dissecting pathology of posterior cerebral artery: a report of two cases\u2014aneurysm and pial arteriovenous fistula"],"prefix":"10.1136","volume":"14","author":[{"given":"Vignesh","family":"Selvamurugan","sequence":"first","affiliation":[{"name":"Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2879-8486","authenticated-orcid":false,"given":"Surya Nandan","family":"Prasad","sequence":"additional","affiliation":[{"name":"Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vivek","family":"Singh","sequence":"additional","affiliation":[{"name":"Radiodiagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zafar","family":"Neyaz","sequence":"additional","affiliation":[{"name":"Radiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,5,20]]},"reference":[{"key":"2025082710460996000_14.5.e237722.1","first-page":"648","article-title":"Isolated posterior cerebral artery dissection: report of three cases","volume":"27","author":"Sherman","year":"2006","journal-title":"AJNR Am J Neuroradiol"},{"key":"2025082710460996000_14.5.e237722.2","doi-asserted-by":"publisher","DOI":"10.1007\/s002340050031"},{"key":"2025082710460996000_14.5.e237722.3","doi-asserted-by":"crossref","DOI":"10.3389\/fneur.2011.00038","article-title":"Dissecting aneurysms of posterior cerebral artery: clinical presentation, angiographic findings, treatment, and outcome","volume":"2","author":"Taqi","year":"2011","journal-title":"Front Neurol"},{"key":"2025082710460996000_14.5.e237722.4","doi-asserted-by":"crossref","DOI":"10.4103\/0028-3886.280635","article-title":"Posterior cerebral artery aneurysms: parent vessel occlusion being a viable option in the era of Flowdivertors","volume":"68","author":"Singh","year":"2020","journal-title":"Neurol India"},{"key":"2025082710460996000_14.5.e237722.5","first-page":"27","article-title":"Aneurysms of the posterior cerebral artery: classification and endovascular treatment","volume":"22","author":"Ciceri","year":"2001","journal-title":"AJNR Am J Neuroradiol"},{"key":"2025082710460996000_14.5.e237722.6","doi-asserted-by":"publisher","DOI":"10.1016\/j.surneu.2008.01.047"},{"key":"2025082710460996000_14.5.e237722.7","doi-asserted-by":"crossref","DOI":"10.4103\/0028-3886.178032","article-title":"Traumatic aneurysms of the intracranial and cervical vessels: a review","volume":"64","author":"Bhaisora","year":"2016","journal-title":"Neurol India"},{"key":"2025082710460996000_14.5.e237722.8","doi-asserted-by":"crossref","DOI":"10.4103\/ajns.AJNS_290_18","article-title":"Detection and Evaluation of Intracranial Aneurysms in the Posterior Fossa by Multidetector Computed Tomography Angiography - Comparison with Digital Subtraction Angiography","volume":"14","author":"Singh","year":"2019","journal-title":"Asian J Neurosurg"},{"key":"2025082710460996000_14.5.e237722.9","doi-asserted-by":"publisher","DOI":"10.1177\/1591019916653934"},{"key":"2025082710460996000_14.5.e237722.10","doi-asserted-by":"crossref","first-page":"856","DOI":"10.2176\/nmc.cr.2015-0072","article-title":"Pial arteriovenous fistula caused by trauma: a case report","volume":"55","author":"Nomura","year":"2015","journal-title":"Neurol Med Chir"},{"key":"2025082710460996000_14.5.e237722.11","doi-asserted-by":"crossref","first-page":"242","DOI":"10.2176\/nmc.cr2012-0239","article-title":"Intracranial pial arteriovenous fistula caused by dural tenting: case report","volume":"54","author":"Nishiyama","year":"2014","journal-title":"Neurol Med Chir"},{"key":"2025082710460996000_14.5.e237722.12","doi-asserted-by":"publisher","DOI":"10.1097\/00006123-200112000-00011"},{"key":"2025082710460996000_14.5.e237722.13","doi-asserted-by":"publisher","DOI":"10.3109\/02688697.2011.566382"},{"key":"2025082710460996000_14.5.e237722.14","doi-asserted-by":"publisher","DOI":"10.1227\/01.NEU.0000370008.04869.BF"},{"key":"2025082710460996000_14.5.e237722.15","first-page":"201","article-title":"Intracranial pial arteriovenous fistulas with single-vein drainage. 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