Abstract
Background Endodovascular thrombectomy is a lifesaving procedure for Large Vessel Occlusion stroke, which is becoming increasingly accessible across Australia. The thrombectomy catheter is often coated with hydrophilic polymer to reduce friction and improve access to vascular lesions. However, dislodgement of this material has been described to cause embolic phenomena. An example of this complication is the formation of granulomas in the central nervous system (CNS).
Methods This short report describes a case of delayed-onset cerebral granuloma secondary to hydrophilic polymer post-thrombectomy in a tertiary hospital.
Results Patient with CNS granulomas may present months following initial procedure with focal neurological deficits, leading to diagnostic confusion. Identification of foreign body material in biopsies may be crucial in establishing the diagnosis. Prolonged immunosuppressive therapies may be required to prevent further granuloma formations.
Conclusion CNS granulomatous inflammation secondary to hydrophilic polymer embolisation is a disabling but treatable condition that requires consideration in patients presenting with neurological deterioration following endovascular thrombectomy.
