Pseudoulnar palsy from a small infarct of the precentral knob.
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Biomedical subjects
Publications and source records attributed to S J DePrima.
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Pure motor stroke (PMS) manifesting as distal weakness of a single extremity has rarely been described. The authors report a 59-year-old man with PMS who had primarily distal weakness of a single lower extremity, which to the authors' knowledge has not been previously described. Four days after onset, positive diffusion-weighted imaging confirmed that the small subcortical T2-weighted hyper-enhancing and nonenhancing T1-weighted hypo-intensity noted on magnetic resonance imaging (MRI) represented an acute PMS that was the cause of the patient's weakness. Increased awareness of this rare clinical presentation of PMS coupled with the promise of imaging the PMS with diffusion-weighted MRI should lead to earlier stroke intervention in these patients.
Pure motor neurologic deficits occur among 3%-14% of all patients with ischemic stroke. Pure motor monoparesis occurs among 2%-22% of patients with pure motor stroke. The authors report the case of a 73-year-old woman with isolated finger weakness as the sole manifestation of a small cortical-subcortical pure motor stroke diagnosed within 4 hours of onset by means of diffusion-weighted echoplanar magnetic resonance imaging. To the authors' knowledge, the case of a patient with pure motor stroke with finger weakness as the only manifestation has not been previously reported. Increased awareness of this rare clinical presentation of pure motor stroke coupled with the promise of prompt diagnosis by means of diffusion-weighted MRI should lead to earlier stroke intervention.
The authors report a case of reversed intestinal rotation and review the embryology, clinical presentation, and radiographic findings of this disorder. Although this developmental anomaly of the bowel is rare, it may be diagnosed by the distinctive position, course, and narrowing of the transverse colon.