Journal of neuroimaging : official journal of the American Society of Neuroimaging
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The authors report on a 32-year-old man with common variable immunodeficiency and high signal intensity in basal ganglia on T1-weighted images. No signal alteration on T2-weighted and postcontrast images was observed. The patient had elevated levels of manganese in the serum. The authors conclude that the unusual hyperintensity in the basal ganglia area on T1-weighted images resulted from manganese deposition due to liver dysfunction.
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Case Reports
Paradoxical brain embolism from thrombus associated with vena caval filter in a patient with cancer.
A 71-year-old man experienced sudden onset of hemiparesis and aphasia. He had a 4-month history of gallbladder cholangiocarcinoma, complicated with a postoperative deep-vein thrombosis (DVT) that necessitated a vena caval filter placement. Diffusion-weighted magnetic resonance imaging of the brain showed multiple hyperintense foci. ⋯ Abdominal computed tomography showed a thrombus in the inferior vena cava extending through the filters. A transcranial Doppler bubble study revealed the presence of a right-to-left shunt. Paradoxical cerebral embolism must be considered in patients with DVT who have new onset neurologic deficits even in the presence of a caval filter.
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Acute cerebellitis is one of the main causes of acute cerebellar dysfunction in childhood and may be infectious, postinfectious, or postvaccination. The etiology of acute cerebellitis is usually viral. ⋯ The authors present the clinical and neuroimaging findings of 2 patients presenting with acute cerebellitis. Their magnetic resonance imaging showed hyperintense signal of cerebellar gray matter in T2-weighted sequences, which is a strong indication of a diagnosis of acute cerebellitis.
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A 71-year-old man with symptomatic basilar artery stenosis refractory to antiplatelet therapy and anticoagulation underwent angioplasty and stenting of the basilar artery. The patient was discharged symptom-free on clodiprogel 75 mg qd and aspirin 325 mg qd. ⋯ Its role in the therapy of symptomatic basilar artery stenosis is not yet defined. Furthermore, the best medical treatment postprocedure is yet to be established.
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Case Reports
Misinterpretation of parahippocampal herniation for a posterior fossa tumor: imaging and intraoperative findings.
Tumors of the hippocampal and parahippocampal gyrus are not uncommon, nor are lesions of the cerebellopontine and ambient cisterns. Lesions in these areas include astrocytomas, meningiomas, gangliogliomas, hamartomas, neurilemomas, epidermoids, and dermoids. ⋯ Surgical exploration for biopsy revealed an abnormal posterior fossa anatomy and a parahippocampal herniation into the perimesencephalic cistern. Biopsy confirmed the finding of normal brain.