This 52-year-old man with no remarkable medical history, no anticoagulation use, and no history of trauma was noted to have a subacute–chronic left subdural hematoma during outpatient headache evaluation. No occult vascular lesion or cross-calvarial supply of the right middle meningeal artery (MMA) to the left side was identified on bilateral selective external carotid injections. Because the patient preferred non-surgical management, we performed a left MMA embolization with Onyx 18 (Medtronic), utilizing a Headway Duo microcatheter (MicroVention) via the transradial route. A 6 French Benchmark (Penumbra) was utilized for transradial support into the left external carotid. The patient was discharged home the same day. Repeat scans from 2 to 6 weeks revealed complete resolution of the subdural hematoma. The patient’s headaches resolved. Transradial MMA embolization for subacute–chronic subdural hematoma represents a minimally invasive treatment option for mass effect and hemorrhage-related symptoms. Tailored embolizations are necessary when >1 meningeal vessel supplies the subdural hematoma.
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Contributors Conception and design: All authors; Acquisition of data: All authors; Analysis and interpretation of data: All authors; Drafting the abstract: Rajah; Producing the video: All authors; Critically revising the submission: All authors; Reviewed submitted version: All authors.
Competing interests AHS: financial interest/investor/stock options/ownership: Amnis Therapeutics, Apama Medical, Blink TBI Inc., Buffalo Technology Partners Inc., Cardinal Consultants, Cerebrotech Medical Systems, Inc. Cognition Medical, Endostream Medical Ltd., Imperative Care, International Medical Distribution Partners, Neurovascular Diagnostics Inc., Q’Apel Medical Inc, Rebound Therapeutics Corp., Rist Neurovascular Inc., Serenity Medical Inc., Silk Road Medical, StimMed, Synchron, Three Rivers Medical Inc., Viseon Spine Inc; Consultant/advisory board: Amnis Therapeutics, Boston Scientific, Canon Medical Systems USA Inc., Cerebrotech Medical Systems Inc., Cerenovus, Corindus Inc., Endostream Medical Ltd., Guidepoint Global Consulting, Imperative Care, Integra LifeSciences Corp., Medtronic, MicroVention, Northwest University–DSMB Chair for HEAT Trial, Penumbra, Q’Apel Medical Inc., Rapid Medical, Rebound Therapeutics Corp., Serenity Medical Inc., Silk Road Medical, StimMed, Stryker, Three Rivers Medical, Inc., VasSol, W.L. Gore & Associates; Principal investigator/steering comment of the following trials: Cerenovus NAPA and ARISE II; Medtronic SWIFT PRIME and SWIFT DIRECT; MicroVention FRED & CONFIDENCE; MUSC POSITIVE; and Penumbra 3D Separator, COMPASS, and INVEST. See also the ICMJE disclosure forms included with this submission.
Patient consent for publication Obtained.
Provenance and peer review Commissioned; internally peer reviewed.