Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Contrast neurotoxicity (CN) following exposure to iodinated contrast is uncommon, and usually presents as cortical blindness due to bilateral occipital lobe involvement. Unilateral cortical dysfunction due to CN could mimic an acute stroke and has been rarely described. We report the case of an 89-year-old female who developed a transient dense/complete left homonymous-hemianopsia and left-sided tactile extinction after undergoing a right internal carotid (ICA) artery rotational angiogram with a standard high-volume iodinated contrast injection for 3D visualization a 6×4-mm right posterior communicating artery aneurysm with a fetal posterior cerebral artery (PCA) incorporated in the neck. ⋯ The potential mechanism of CN in our case was the injection of a high volume of contrast in the ICA for the rotational angiogram. The presence of a right fetal PCA possibly allowed the contrast to reach the right occipital lobe. CN manifesting as an acute focal neurologic syndrome should be considered in the setting of recent iodinated contrast exposure.
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To report a novel endovascular coiling technique for ligation of aneurysms presenting with cranial neuropathy. ⋯ This technique may be considered in patients presenting with compressive cranial neuropathy and an aneurysm configuration that allows selective coiling of the inflow zone.
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Isolated focal common carotid artery dissection is a rare condition. ⋯ Focal isolated common carotid artery dissection is a rare condition not to be overlooked. This case presents an incidental finding possibly of traumatic nature. In the presence of concomitant migraine its causal embolic relation to the transient word-finding difficulties must remain open.
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Orbital penetrating injuries may cause significant harm to optic nerves and eyeball as well as to the brain and cerebral vasculature. Defining surrounding neurovascular structures by CT angiography (CTA) is important for surgical removal. We present an uncommon case of a 3-year-old child with a penetrating orbital injury caused by a toothbrush. To the best of our knowledge, there is no report orbital injury with a toothbrush so far.
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Presentation of an interrupted aortic arch (IAA) in adulthood is extremely rare. Nonhemorrhagic stroke has not been reported previously in any adult with IAA. We, herein, describe a formerly asymptomatic 52-year-old male presenting with recurrent vertebrobasilar circulation ischemic strokes resulting from accelerated atherosclerotic arteriopathy secondary to IAA associated upper body hypertension. Surgical correction of IAA led to treatment of hypertension and cessation of ischemic attacks together with regression of collateral arterial networks as shown by computer tomography angiography.