The Computerized Tomographic Appearance of Angiographically Occult Arteriovenous Malformations of the Brain
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چکیده
Eight patients with a histologically proven angiographically occult arteriovenous malformation of the brain had plain and infused computed tomographic (CT) examinations. In five cases angiography revealed a hypovascular mass and in three cases the angiogram was normal. On CT examination a high density lesion (six cases) and ventricular asymmetry (five cases) were demonstrated. In three patients presenting with intracerebral hemorrhage, the high density appearance
منابع مشابه
The computerized tomographic appearance of angiographically occult arteriovenous malformations of the brain.
Eight patients with a histologically proven angiographically occult arteriovenous malformation of the brain had plain and infused computed tomographic (CT) examinations. In five cases angiography revealed a hypovascular mass in three cases the angiogram was normal. On CT examination a high density lesion (six cases) and ventricular asymmetry (five cases) were demonstrated. In three patients pre...
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Six patients with cerebral arteriovenous malformations which did not show any pathological circulation at angiography are described. Computed tomogram appearances of such lesions may be difficult to distinguish from tumours. The need for surgical exploration in localised high attenuation lesions of uncertain nature is stressed, and the literature is reviewed.
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Angiographically occult arteriovenous malformations in the brain are rare but cause considerable diagnostic difficulty. Four personal cases are presented in which CT scans showed hypodense lesions with minimal or no enhancement, and angiograms showed only an avascular mass. Gliomas, a dermoid and an infarct were suspected before histological examination of biopsies or excised specimens. The pat...
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Angiographically occult arteriovenous malformations (AOAVMs) are poorly understood. AOAVMs include spontaneous regression of cerebral AVMs. Here we discuss spontaneous angiographical regression of cerebral arteriovenous malformations (SRAVM). We present the case of a 34-year-old male patient with SRAVM in whom an arteriovenous (AV) shunt remnant was revealed by intraoperative indocyanine green ...
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