{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T12:57:47Z","timestamp":1781528267208,"version":"3.54.1"},"reference-count":12,"publisher":"BMJ","issue":"6","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,6,2]]},"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:p>A woman aged in her 50s presented with sudden onset of vertigo, headaches and epistaxis, initially attributed to her background of chronic systemic hypertension. Ophthalmological history was significant for bilateral proliferative diabetic retinopathy and retinal detachment managed with vitrectomy, endolaser and intraocular silicone oil 5 years prior to the current presentation. Review of the initial non-contrast CT by our neuroradiology department identified right subretinal silicone oil, tracking along the subarachnoid space of the right optic sheath, right suprasellar cistern and non-dependent lateral ventricles. Initially interpreted as acute haemorrhage at an external facility, the patient underwent repeat imaging over a period of 6\u2009months that failed to demonstrate expected temporal resolution of blood products. A subsequent unifying diagnosis of disseminated subarachnoid and intraventricular silicone oil was established. The following case highlights the relevant clinical history when requesting imaging and pertinent radiological findings when reporting patients postretinal detachment surgery.<\/jats:p>","DOI":"10.1136\/bcr-2026-272487","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T12:40:31Z","timestamp":1781527231000},"page":"e272487","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Subarachnoid and intraventricular dissemination of silicone oil: an under-recognised radiological diagnosis"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5756-5171","authenticated-orcid":false,"given":"Travis","family":"Fahrenhorst-Jones","sequence":"first","affiliation":[{"name":"Department of Neuroradiology, Queensland Health, Brisbane, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan","family":"Pereira","sequence":"additional","affiliation":[{"name":"Department of Neuroradiology, Queensland Health, Brisbane, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michelle","family":"Craigie","sequence":"additional","affiliation":[{"name":"Department of Neuroradiology, Queensland Health, Brisbane, Queensland, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,6,15]]},"reference":[{"key":"2026061505401888000_19.6.e272487.1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.39581.525532.47"},{"key":"2026061505401888000_19.6.e272487.2","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1111\/ceo.14205","article-title":"Rhegmatogenous retinal detachment surgery: A review","volume":"51","author":"Warren","year":"2023","journal-title":"Clin Exp Ophthalmol"},{"key":"2026061505401888000_19.6.e272487.3","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1148\/radiology.212.1.r99jl27151","article-title":"MR imaging of intraventricular silicone: case report","volume":"212","author":"Williams","year":"1999","journal-title":"Radiology"},{"key":"2026061505401888000_19.6.e272487.4","doi-asserted-by":"crossref","first-page":"864","DOI":"10.1016\/j.radcr.2019.04.019","article-title":"Prone CT for diagnosis of silicone oil intraventricular migration after intraocular tamponade","volume":"14","author":"Carneiro","year":"2019","journal-title":"Radiol Case Rep"},{"key":"2026061505401888000_19.6.e272487.5","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(00)00368-8"},{"key":"2026061505401888000_19.6.e272487.6","doi-asserted-by":"publisher","DOI":"10.1001\/archopht.1989.01070010732036"},{"key":"2026061505401888000_19.6.e272487.7","doi-asserted-by":"publisher","DOI":"10.3171\/2013.1.JNS121570"},{"key":"2026061505401888000_19.6.e272487.8","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1097\/RCT.0b013e3181fc938d","article-title":"Silicone oil migrating from intraocular tamponade into the ventricles: case report with magnetic resonance image findings","volume":"35","author":"Tatewaki","year":"2011","journal-title":"J Comput Assist Tomogr"},{"key":"2026061505401888000_19.6.e272487.9","doi-asserted-by":"crossref","first-page":"466","DOI":"10.1177\/2474126419875298","article-title":"Intravitreal Silicone Oil Migration Into the Lateral Cerebral Ventricles","volume":"3","author":"Cao","year":"2019","journal-title":"J Vitreoretin Dis"},{"key":"2026061505401888000_19.6.e272487.10","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(00)00800-X"},{"key":"2026061505401888000_19.6.e272487.11","doi-asserted-by":"crossref","DOI":"10.1186\/s12886-025-03924-0","article-title":"Intraventricular silicone oil migration post-retinal detachment surgery: diagnostic features and classification - a case study with literature review","volume":"25","author":"Li","year":"2025","journal-title":"BMC Ophthalmol"},{"key":"2026061505401888000_19.6.e272487.12","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.2004.062893"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2026-272487","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T12:40:32Z","timestamp":1781527232000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2026-272487"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6]]},"references-count":12,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2026,6,15]]},"published-print":{"date-parts":[[2026,6]]}},"alternative-id":["10.1136\/bcr-2026-272487"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2026-272487","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,6]]}}}