Angiographically occult vascular malformations causing intracranial hemorrhage |
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Authors: | Shoji Bitoh Hiroshi Hasegawa Masaaki Fujiwara Masami Sakurai |
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Affiliation: | 1. Department of Neurosurgery, Osaka Koseinenkin Hospital, Osaka, Japan;2. Department of Pathology, Osaka University Hospital, Osaka, Japan |
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Abstract: | In 5 patients, angiographically occult vascular malformations led to intracerebral or intracerebellar hemorrhages. Angiographic findings were not suggestive of vascular abnormalities, but signs of a mass were present in 4 patients. Computed tomography (CT) scanning suggested the presence of cryptic vascular lesions accompanied by intraparenchymal hemorrhage in 2 patients. In all patients surgical treatment was successful. Histological examination confirmed these lesions to be venous malformations in the cerebellum in 2 patients and in the left frontal region in 1, and arteriovenous malformations in the cerebellum and right putaminal region in 1 patient each. |
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Keywords: | angiography occult vascular malformations intracerebral, intracerebellar hemorrhage computed tomography |
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