Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Case Reports
Juvenile psammomatoid ossifying fibroma with visual disturbance: a case report with imaging features.
Juvenile psammomatoid ossifying fibroma (JPOF) of the sphenoid sinus is a rare subtype of ossifying fibroma of the sinonasal cavity and facial bone in young adults. Computed tomographic (CT) and magnetic resonance (MR) imaging features of JPOF have been reported, but to our knowledge, positron emission tomography (PET) findings have not been described. ⋯ MR imaging showed low signal intensity in the mass on both T(1)- and T(2)-weighted images. [(18)F]fluorodeoxyglucose ([(18)F]FDG) and [(11)C]methyl-L-methionine ([(11)C]Met) PET/CT showed abnormal uptake in the lesion, with standardized uptake values (SUV) of 6.2 ([(18)F]FDG) and 4.6 ([(11)C]Met). Familiarity with the imaging features of this rare disease aids its differentiation from other more familiar lesions to permit appropriately aggressive therapy and improve prognosis.
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Virtual Histology intravascular ultrasound (VH IVUS) volumetric analysis (analysis of the entire plaque responsible for stenosis) has been used for carotid plaque diagnosis. Knowing the carotid plaque characteristics by analyzing the plaque composition only at the minimum lumen site will facilitate plaque diagnosis using VH IVUS. ⋯ The plaque composition at the minimum lumen site represents the volumetric composition of the entire carotid plaque that causes atherosclerotic cervical carotid artery stenosis.
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Randomized Controlled Trial
Clinical-radiological severity mismatch phenomenon: patients with severe neurological deficits without matching infarction on computed tomographic scan.
The objective was to determine the long-term outcome of patients with severe persistent neurological deficits without a large infarction on computed tomographic (CT) scan. ⋯ We observed that approximately one-fourth of patients with severe neurological deficits have clinical-radiological severity mismatch. Such patients appear to have a high rate of favorable outcomes at 1 year.
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To evaluate magnetic resonance imaging (MRI) features of ruptured spinal dermoid tumors with spread of lipid droplets in the central spinal canal and/or spinal subarachnoid space and to understand the underlying mechanism. ⋯ Spinal dermoid tumors ruptured into central spinal canal and/or spinal subarachnoid space have unique MRI features. The absorption of lipid droplets within central spinal canal is rather difficult, and their movement is extremely slow. We propose that fatty components within the central canal of spinal cord may be partially associated with spinal dermoid tumors developmentally.
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Review Case Reports
Stroke following epidural injections--case report and review of literature.
To describe a growing number of cases associated with spinal cord and posterior circulation ischemia as a complication of cervical epidural steroid injection (CESI). ⋯ Infarction is a rare but potentially devastating complication of CESI. It may occur despite the use of fluoroscopic guidance.