Clinical imaging
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Review Case Reports
Carotid-anterior cerebral artery anastomosis: MR angiographic features and literature review.
Carotid-anterior cerebral artery anastomosis is a rare anomaly of the anterior part of the circle of Willis. We report here magnetic resonance (MR) angiographic findings in 2 patients with this anomaly. ⋯ Thirty anomalous arteries were found in the 27 patients (R/L/bilateral=22/2/3). The reason for the right-sided predominance is unknown.
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Subependymomas are rare, slow-growing, benign intraventricular tumors which occur commonly in the fourth or lateral ventricle. They usually occur in elderly men and often are asymptomatic and discovered incidentally. We report a case of a 6-year-old girl with a symptomatic subependymoma in the third ventricle with MR imaging.
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The purpose of this study was to characterize the diagnostic performance of a regimen of CT screening for lung cancer. ⋯ The performance of the ELCAP regimen is quite satisfactory in avoiding over many positive results of the initial CT, and it produces highly promising diagnostic results as for the attainment of cure by early intervention.
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This paper demonstrates usual and unusual findings on MR imaging (MRI) including fluid-attenuated inversion recovery (FLAIR), diffusion- and perfusion-weighted image and MR angiography (MRA) in 30 patients with sickle cell cerebrovascular disease. This paper also illustrates the underlying pathophysiology of sickle cell cerebrovascular disease by using the cases with usual and unusual MR findings, including long-time follow-up cases during transfusion therapy. MRI and MRA are useful in defining the basis for stroke and assessing the effects of chronic transfusion therapy.
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Sarcoidosis is a multisystemic granulomatous disease of unknown etiology. Neurologic manifestations occur usually as a part of the spectrum of the systemic disease. ⋯ All patients had neurological symptoms and were evaluated with MRI revealing a wide spectrum of findings: periventricular and white matter lesions, multiple or solitary supra- and infratentorial brain lesions, leptomeningeal enhancement, involvement of brain nerves and intramedullar lesions. These findings are not specific for sarcoidosis and must be considered with the clinical course of the patient in arriving at the correct diagnosis.