title: Onyx embolization of an avulsed thalamoperforator following endoscopic colloid cyst and lamina terminalis fenestration.
abstract: A patient presented with headaches and was found to have a colloid cyst in the third ventricle and ventriculomegaly. The patient underwent endoscopic colloid cyst resection and third ventriculostomy without incidence. Prior to emergence, a blown right pupil was acutely noted, and bright red blood emanated from the ventricular drain that was routinely placed in the endoscopy tract at the conclusion of the procedure. CTangiography demonstrated active extravasation from the pre-pontine cistern into the third ventricle and subarachnoid space. Emergency DSA confirmed active extravasation from an avulsed thalamoperforator arising from the proximal right P1 posterior cerebral artery, which was immediately embolized without incident.
authors: Departments of Neurosurgery and Radiology, Medical University of South Carolina, Charleston, South Carolina, USA.
authors: Raymond D
authors: RD
authors: Turner
authors: Departments of Neurosurgery and Radiology, Medical University of South Carolina, Charleston, South Carolina, USA.
authors: Imran
authors: I
authors: Chaudry
authors: Departments of Neurosurgery and Radiology, Medical University of South Carolina, Charleston, South Carolina, USA.
authors: Aquilla
authors: A
authors: Turk
authors: Departments of Neurosurgery and Radiology, Medical University of South Carolina, Charleston, South Carolina, USA.
authors: Alejandro
authors: A
authors: Spiotta
mesh_terms: D056364:Colloid Cysts / Q000000981:diagnostic imaging / Q000601:surgery*; D004338:Drug Combinations; D004621:Embolization, Therapeutic / Q000379:methods; D004724:Endoscopy / Q000009:adverse effects; D006801:Humans; D007031:Hypothalamus / Q000000981:diagnostic imaging / Q000601:surgery*; D011145:Polyvinyls / Q000008:administration & dosage*; D020769:Posterior Cerebral Artery / Q000000981:diagnostic imaging*; D011859:Radiography; D013635:Tantalum / Q000008:administration & dosage*; D020542:Third Ventricle / Q000000981:diagnostic imaging / Q000601:surgery; D014696:Ventriculostomy / Q000009:adverse effects
chemical_list: D004338:Drug Combinations; C558446:Onyx 18; D011145:Polyvinyls; D013635:Tantalum
keywords: Hemorrhage; Stroke