The atlanto-occipital joint is composed of the superior fossa lateral masses atlas (C1) and occipital condyles. Congenital Atlanto-occipital fusion (AOF) involves osseous union base occiput (C0) (C1). AOF or occipitalization/assimilation represents a craniovertebral junction malformation (CVJM) which can be accompanied by other cranial spinal malformations. may asymptomatic patients experience ...

Transient cortical blindness after coronary angiography or angioplasty is a rare complication. Patients with aortocoronary bypass grafts such as internal mammary artery have a seperate risk factor probably because of the direct contrast injection to the vertebral artery during the catheterisation of the internal mammary artery ostium. In most cases, computed tomography scan revealed typical, sy...

Moyamoya disease is infrequently associated with intracranial aneurysms arising from the circle of Willis vessels or from "peripheral" branches of choroidal and meningeal vessels. We present a rare case of a moyamoya-related aneurysm arising along the dural junction of multiple meningeal branches from the external carotid artery causing intracerebral hemorrhage. Endovascular coil embolization o...

Intracranial atherosclerotic disease is a major cause of ischemic stroke. Stenting and aggressive medical management for preventing recurrent stroke in intracranial stenosis was terminated prematurely due to a high stroke and death rate in patients randomized for intracranial stent placement. However, for some patients, angioplasty and/or stent placement remains the best approach. Flow diverter...

We report a case of a ruptured saccular aneurysm of the distal posterior cerebral artery (P3). The aneurysm was successfuly clipped through an occipital interhemispheric approach and the patient was discharged without any neurological deficit.

Vertebral Artery Occlusion Following Hyperextension and Rotation of the Head • This is a case report of a lateral medullary syndrome of Wallenberg following occlusion of one vertebral artery and stenosis of the opposite artery precipitated by combined motion of hyperextension, rotation, and lateral flexion of the head within physiological limits. Sufficient duration of such head position appear...