Safety of Apollo Micro Catheter in Pediatric Patients

Inclusion Criteria: * The subject or subject's legally authorized representative has signed and dated an informed Consent Form. * Subject's age is ≤ 21 years. * The subject has a confirmed diagnosis of brain arteriovenous malformation in the cerebral cortex, cerebellum or dura mater that is indicated for endovascular embolization with Onyx™ LES or TruFill n-Butyl Cyanoacrylate (n-BCA) Liquid Embolic Systems and where the use of Apollo Embolization Delivery Micro Catheter may or may not be indicated for surgical resection. * The subject is clinically and neurologically stable for a minimum of 48 hours prior to embolization. * The subject has a life expectancy of at least 1 year with the exception of new born babies with Vein of Galen malformation with cardiopulmonary failure where no other treatment option remains. * The subject agrees to and is capable of completing all study required procedures Exclusion Criteria: * Female who is pregnant or lactating. * Current participation in another investigational drug or device study. * Subject has a brain tumor or other malignancy