Kazunori Hosotani

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BACKGROUND It is well-known that arachnoid cysts of the middle fossa are associated often with chronic subdural hematomas and/or intracystic hemorrhages. However, reports of an arachnoid cyst associated with an aneurysm are rare. CASE DESCRIPTION A 45-year-old man was admitted with headache due to intracystic hemorrhage in the sylvian fissure, associated(More)
A 57-year-old man presented with a transient ischemic attack due to dissection of the middle cerebral artery. He suffered total aphasia and clouding of consciousness for several minutes. On admission, he was alert without neurological deficit. Magnetic resonance (MR) angiography and conventional angiography depicted irregularity and double lumen of the left(More)
A 34-day-old male presented with a rare neonatal ruptured aneurysm of the distal posterior inferior cerebellar artery manifesting as a 10-day history of enlargement of head circumference. Magnetic resonance imaging revealed hydrocephalus and a round infratentorial enhanced lesion which compressed the medulla. Left vertebral angiography demonstrated an(More)
OBJECTIVES The aim of this study was to identify risk factors for rupture of unruptured cerebral aneurysms (UCAs) in elderly Japanese patients aged 70 years or older. METHODS The participants included all patients 70 years of age or older in 3 prospective studies in Japan (the Unruptured Cerebral Aneurysm Study of Japan [UCAS Japan], UCAS II, and the(More)
To better understand the pyramidal tract of the internal capsule, we evaluated the relationship between the localization of thalamic hemorrhage and motor weakness. On an axial CT scan at the level of the pineal body, two lines were drawn as follows: line-a between the lateral edge of the anterior horn and the lateral edge of the trigone, line-b vertical to(More)
SUMMARY The purpose of this study was to determine the value of stenting in the treatment of occlusive vascular disease involving the cervical internal carotid artery. Clinical and angiographical results of stenting were compared those of conventional angioplasty alone up to 20 months of follow-up. The Palmaz-Schatz stent was implanted in two patients with(More)
SUMMARY There have never been functional studies in the diagnosis of hemifacial spasm caused by neurovascular compression. We used neurointerventional techniques to conduct a functional investigation of the artery responsible for hemifacial spasm in seven patients. A microcatheter was inserted into the various arteries of the posterior circulation under(More)