Fumio Maehara

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PURPOSE To report the anatomic and radiologic development of the transverse, sigmoid, and occipital sinuses, the emissary veins, and the jugular bulb formation from the jugular sinus in humans before and after birth. METHODS Roentgenograms of 33 injected brains showing the cranial venous system in human fetuses from 3 to 7 months of gestational age and(More)
We report the cases of two patients, each of whom had two separate angiographically demonstrable intracerebral arteriovenous malformations (AVMs). One patient had an intraventricular hemorrhage with AVMs in the basal ganglia and the insula on the left side, and the other had a pontine hemorrhage with AVMs in the pons and the occipital lobe on the right(More)
We report seven patients with scalp arteriovenous malformations, including two patients with lesions > 10 cm in diameter, who were successfully treated. The principal complaint of each patient was a deforming mass. Each of four patients had a history of blunt traumatic injury. The lesions, each consisting of the nidus, feeders, and draining veins, evolved(More)
The authors report the case of a 43-year-old woman with a venous malformation of the mesencephalon occluding the sylvian aqueduct. Neuroradiological investigations suggested aqueductal stenosis, while the presence of a venous malformation was diagnosed by both magnetic resonance imaging and an angiogram, and was visualized using a neuroendoscope. This is(More)
Examination by questionnaire throughout the country revealed 97 cases of radiation brain necrosis (RN). Of the above 97 cases, histologically confirmed 39, having received one course of radiation therapy received an average dose of 62 +/- 10.6 Gy. Minimal total dose provocative of RN is estimated statistically to be 40.6 Gy. Safety fractionation for total(More)
Brain anomalies in 9 cases of cytogenetically proven 18 trisomy were reported. In addition to the various cerebral anomalies such as gyral or lobar abnormalities, hippocampal dysplasia, abnormal lateral geniculate body, agenesis or hypoplasia of the corpus callosum, absent or hypoplastic olfactory nerves, small optic tracts, and dysplasia of the inferior(More)
UNLABELLED A rare case of cerebellar astrocytoma presenting with cerebellar hemorrhage is reported. On reviewing the literature, we could collect only four other cases of spontaneous hemorrhage in cerebellar astrocytomas. CASE On April 5, 1984, a 15-year-old boy noted a sudden onset of headache, vomiting and vertigo and became lethargic and confused. He(More)
Four rare cases of aneurysm of the lenticulostriate artery (LSA) are presented. LSA aneurysms were located at the origin in three patients and distally in one. Two cases were of multiple aneurysms, one was associated with hypertensive intracerebral hematoma (putaminal hemorrhage), and the other with moyamoya disease. Two patients were successfully treated(More)
In order to show the vascular anatomy in periventricular region, two adult cases of moyamoya disease with intracerebral hemorrhage extending into lateral ventricle were presented. And we discussed the relation between the vascular anatomy and the form of hemorrhage in moyamoya disease. The first case was a 46-year-old woman admitted for nausea and vomiting(More)
The development and radiology of the vein of Labbé (VL) were investigated using the brains of 19 aborted human fetuses and 6 normal adults injected at autopsy with radiopaque material through the venous system. Carotid angiograms taken in stereoscopic pairs (110 cases, 167 hemispheres) were also analyzed in detail. Developmental alterations of the cerebral(More)