1/7. Unusual CT and MRI appearance of carbon monoxide poisoning.Unilateral low attenuation areas within the right putamen, globus pallidus and thalamus were observed on CT in a patient after exposure to carbon monoxide. A transient bilateral appearance was found on subsequent CT examinations. Hemorrhagic infarction of the right putamen, and ischemic lesions in both thalami were visualized on MRI 2 weeks later.- - - - - - - - - - ranking = 1keywords = putamen (Clic here for more details about this article) |
2/7. Delayed ischemic deficit after resection of a large intracranial dermoid: case report and review of the literature.OBJECTIVE AND IMPORTANCE: A unique case of delayed ischemic deficit after resection of a large intracranial dermoid is presented. CLINICAL PRESENTATION: A 23-year-old woman, 36 hours after the uneventful gross total resection of a large intracranial dermoid cyst, slowly developed a progressive mixed aphasia and right hemiparesis. magnetic resonance imaging and magnetic resonance angiography revealed small infarcts of the left putamen and temporal-occipital junction and a vasospastic tapering of the left M1 segment. INTERVENTION: Angiography confirmed severe vasospastic tapering of the left M1 and M2 segments. Endovascular treatment successfully restored flow in the left superior division. However, the initial attempt at low-pressure dilation of the inferior division led to vessel rupture. Seven months after reoperation for emergent trapping of the M1 segment, the patient made an excellent recovery, with only mild right-hand incoordination. CONCLUSION: Ruptured dermoid cysts are a risk for early and delayed cerebral ischemia, and endovascular treatment of dermoid-encased vessels may carry a higher risk for rupture.- - - - - - - - - - ranking = 0.5keywords = putamen (Clic here for more details about this article) |
3/7. MRI findings of hypoxic cortical laminar necrosis in a child with hemolytic anemia crisis.We present magnetic resonance imaging findings of a 5-year-old girl who had a rapidly installing hemolytic anemia crisis induced by trimethoprim-sulfomethoxazole, resulting in cerebral anoxia leading to permanent damage. magnetic resonance imaging revealed cortical laminar necrosis in arterial border zones in both cerebral hemispheres, ischemic changes in subcortical white matter of left cerebral hemisphere, and in the left putamen. Although cortical laminar necrosis is a classic entity in adulthood related to conditions of energy depletions, there are few reports available in children. A wide review of the literature is also presented.- - - - - - - - - - ranking = 0.5keywords = putamen (Clic here for more details about this article) |
4/7. Athetoid cerebral palsy with cysts in the putamen after hypoxic-ischaemic encephalopathy.Three cases of athetoid cerebral palsy after hypoxic-ischaemic encephalopathy (HIE) are reported. All three neonates had haemorrhagic lesions in the basal ganglia and thalami on magnetic resonance imaging (MRI). Prior cranial ultrasound had detected the lesions in only two cases. In all three children athetoid movements began within the first year of life. Follow up MRI scans showed bilateral symmetrical cystic lesions in the posterior putamen. Although haemorrhagic lesions within the basal ganglia are a common MRI finding in neonates with HIE, few of these babies develop athetoid cerebral palsy. We believe this to be the first report of discrete cystic lesions found in the basal ganglia of children with athetoid cerebral palsy.- - - - - - - - - - ranking = 2.5keywords = putamen (Clic here for more details about this article) |
5/7. Childhood ischemic stroke caused by fibromuscular dysplasia of the intracranial artery--case report.An 8-year-old girl presented with fibromuscular dysplasia of the intracranial vessels manifesting as ischemic stroke. neuroimaging showed infarction of the right putamen and ipsilateral frontal white matter. Angiography revealed "string of beads" sign involving the terminal portion of the right internal carotid artery and the horizontal segment of the ipsilateral middle cerebral artery. She was treated conservatively. magnetic resonance angiography at 2 months post ictus showed similar findings in the middle cerebral artery but improvement of the stenosis of the internal carotid artery. Her neurological deficits had almost resolved. fibromuscular dysplasia should be part of the differential diagnosis of ischemia in children.- - - - - - - - - - ranking = 0.5keywords = putamen (Clic here for more details about this article) |
6/7. brain magnetic resonance imaging in suspected extrapyramidal cerebral palsy: observations in distinguishing genetic-metabolic from acquired causes.Experienced clinicians recognize that some children who appear to have static cerebral palsy (CP) actually have underlying genetic-metabolic disorders. We report a series of patients with motor disorders seen in children with extrapyramidal CP in whom brain magnetic resonance imaging abnormalities provided important diagnostic clues in distinguishing genetic-metabolic disorders from other causes. One cause of static extrapyramidal CP, hypoxic-ischemic encephalopathy at the end of a term gestation, produces a characteristic pattern of hyperintense signal and atrophy in the putamen and thalamus. Other signal abnormalities and atrophy in the putamen, globus pallidus, or caudate can point to genetic-metabolic diseases, including disorders of mitochondrial and organic acid metabolism. Progress in understanding and treating genetic diseases of the developing brain makes it essential to diagnose disorders that masquerade as static CP. brain magnetic resonance imaging is a useful diagnostic tool in the initial evaluation of children who appear to have CP.- - - - - - - - - - ranking = 1keywords = putamen (Clic here for more details about this article) |
7/7. hemiplegia caused by inadvertent intra-carotid infusion of total parenteral nutrition.A 24 year-old woman developed acute hemiplegia and a seizure following accidental catheterization of the right common carotid artery and total parenteral nutrition infusion. magnetic resonance imaging of the brain showed lesions in the frontal lobe and putamen consistent with an ischemic stroke. Angiography through the central venous catheter confirmed its intra-arterial location. The patient's weakness improved after hyperbaric oxygen treatment. We concluded that stroke or seizures during total parenteral nutrition administration through a central venous catheter should alert one to the possibility of inadvertent intra-arterial infusion, especially in patients who have had central lines inserted several times previously.- - - - - - - - - - ranking = 0.5keywords = putamen (Clic here for more details about this article) |