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INTRODUCTION

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This atlas comprises 48 cases to assist the clinician caring for patients with neurologic symptoms. The majority of the images shown are magnetic resonance imaging (MRI) scans; other techniques illustrated include magnetic resonance (MR) and conventional angiography and computed tomography (CT) scans. Many different categories of neurologic disease are illustrated, including numerous examples of ischemic, inflammatory, inherited, vascular, and neoplastic etiologies.

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FIGURE 5-1

Limbic encephalitis (Chap. 50). Coronal (A, B), axial fluid-attenuated inversion recovery (FLAIR) (C, D), and axial T2-weighted (E) MR images demonstrate abnormal high signal involving the bilateral mesial temporal lobes (arrowheads) including the hippocampi (left greater than right) without significant mass effect (arrows). There was no enhancement on postgadolinium images (not shown).

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FIGURE 5-2

Central nervous system tuberculosis. Axial T2-weighted MRI (A) demonstrates multiple lesions (arrows) with peripheral high signal and central low signal, located predominantly in the cortex and subcortical white matter, as well as in the basal ganglia. Axial T1-weighted MR images postgadolinium (B, C) demonstrate ring enhancement of the lesions (arrows) and additional lesions in the subarachnoid space (arrowheads). Sagittal T2-weighted MR image of the cervical spine (D) demonstrates a hypointense lesion in the subarachnoid space at the level of T5 (arrow). Sagittal T1-weighted postgadolinium MRI of the cervical spine (E) demonstrates enhancement of the lesion in the subarachnoid space at the level of T5 (arrow).

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FIGURE 5-3

Neurosyphilis: Case I. Axial T2-weighted MRIs (A, B) demonstrate well-defined areas of abnormal high signal in the basal ganglia bilaterally and in a wedge-shaped distribution in the right parietal lobe (arrows). Axial (C, D) T1-weighted images postgadolinium. Coronal (E, F) T1-weighted images postgadolinium demonstrate irregular ring enhancement of the lesions (arrows).

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