I Miyata

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A 65-year-old female developed peduncular hallucinosis 3 days after rupture of a basilar-superior cerebellar artery aneurysm. There were no neurological deficits except slight anisocoria when she first complained of hallucinations. Vasospasm of the perforating arteries to the upper brainstem, rather than direct brainstem damage caused by the bleeding, was(More)
A 38-year-old man was admitted to Iwakuni National Hospital on July 6, 1978, with the complaints of difficulty seeing and walking. Two weeks before admission, he first experienced dizziness and it slowly progressed to uncontrollable tremor-like movements of the whole body. On admission, he was alert, oriented and afebrile. He had not experienced nausea,(More)
The protective effect of a large decompressive craniectomy against delayed ischemic neurological deficits (DIND) was evaluated in patients operated on after subarachnoid hemorrhage due to a ruptured aneurysm. In 54 cases, a large decompressive craniectomy was performed (Group D), and 41 patients underwent conventional craniotomy (Group ND). Transient DIND(More)
An 11-year-old girl developed cerebellar infarction presenting as a posterior fossa mass lesion after stretching and flexing her neck. Cerebral angiography demonstrated irregular narrowing of the right vertebral artery at the C2 level and x-rays of the upper cervical spine showed atlantoaxial subluxation with os odontoideum. She underwent surgical(More)
Diagnosis of intracranial meningiomas with computed tomography (CT) is usually easy. However, some authors have reported cases preoperatively misdiagnosed because of atypical computed tomographic features. We report a case of non-cystic meningioma presenting a ring enhanced mass lesion, with CT scan. A 48-year-old male was admitted to our hospital on(More)
Three patients with thoracic myelopathy were operated on using a modified surgical approach, anterior decompression of the thoracic cord through the posterior approach. The usefulness of and indication for this approach were discussed. Operative technique is as follows. In the prone position, laminae are removed widely enough to include the medial half of(More)