Teaching NeuroImages: Spontaneous regression of AVM feeding pedicle pseudoaneurysms

Multiple Feeding Artery Pedicle Pseudoaneurysms in the Posterior Circulation: Association with Hemorrhage and AVM

We experienced rare combination of multiple irregular shaped aneurysms along the course of the feeding artery and arteriovenous malformation (AVM) in the posterior circulation. We could not explain which aneurysm was a cause of bleeding because all the aneurysms showed irregular in shape like pseudoaneurysms and location of the aneurysms was very close each other. We report two cases in which m...

Teaching NeuroImages: spontaneous asymptomatic occlusion of a cerebral arteriovenous malformation.

Adam Strzelczyk, MD Ulrich Sure, MD Felix Rosenow, MD A 34-year-old man with refractory epilepsy due to an arteriovenous malformation (AVM) of the right postcentral gyrus (figure, A) was evaluated for epilepsy surgery.1 After study of the size, location, and depth of the lesion, we decided to defer resection, radiosurgery, and embolization because of concern that intervention would result in ne...

Teaching neuroimages: a dangerous complication of spontaneous intracranial hypotension.

A 43-year-old man presented with a nontraumatic orthostatic headache, spatial disorientation, and visual hallucinations ("colored flames"). General and neurologic examination were normal. Turbo spin echo T2-weighted MRI showed bilateral subdural fluid collection and venous sinus engorgement (figure, A), suggesting spontaneous intracranial hypotension (SIH). Two subdural hematomas were also foun...

Teaching NeuroImages: Spontaneous resolution of a giant intracranial arachnoid cyst.

A giant arachnoid cyst (63 83 11 cm) of left middle cranial fossa was found incidentally in a 3-year-old boy with head MRI examination for increased head circumference (figure 1). Surgical intervention was refused by his parents since the boy was asymptomatic, and the patient was followed up. Repeated MRI performed 2 years later revealed disappearance of the cyst, and the compressed brain tissu...

Teaching NeuroImages: Spontaneous spinal epidural hematoma with spot sign positivity.