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Biomedical subjects

S Kuramoto

Publications and source records attributed to S Kuramoto.

221 records · Page 13Linked to original sources
PubMedDate not supplied

Analysis of tremulous movements after thalamotomy correlated to intrathalamic therapeutic lesions.

Residual tremulous movements after thalamotomy were examined using an accelerometer and EMG. Various types of tremor-provoking procedures were performed and the tremulous movements were classified according to the pattern of modificiation by these procedures. Four types of postoperative tremulous movements were noted, and a correlation was made to the intrathalamic therapeutic lesions.

Follow-Up Studies↗
PubMedDate not supplied

Evaluation of brain dysfunction in hypertensive putaminal hemorrhage with multimodality evoked potentials.

Changes in multimodality evoked potentials (MEP's), consisting of somatosensory evoked potentials (SEP's), visual evoked potentials (VEP's), and auditory evoked brainstem responses (AEBR's), were studied in 36 patients with hypertensive putaminal hemorrhage to ascertain the relation among areas and distribution of brain dysfunction, the size of hemorrhage on computerized tomographic scan, and the clinical outcome. Among MEP's, SEP's were most significantly involved in all patients. Abnormalities in VEP's and AEBR's remained mild or moderate when the hemorrhage did not extend to the diencephalon. If SEP's were normal or mildly abnormal, they improved early the ictus. These patients did well clinically. If SEP's were absent, the patients had poor outcome even when the hemorrhage was small and located outside the internal capsule. In contrast, deterioration or persistence of MEP's indicated secondary insult to the brain and poor patient outcome. Early and serial MEP studies are useful in evaluating primary and secondary brain dysfunction and in predicting patient outcome in hypertensive putaminal hemorrhage.

Adult↗
PubMedDate not supplied

Pleomorphic xanthoastrocytoma with desmoplastic reaction: angiomatous variant. Report of two cases.

Two cases of cerebral pleomorphic xanthoastrocytomas (PXA-s) with prominent vascularity and desmoplastic changes occurring in young subjects are presented. The tumors displayed the marked pleomorphism characteristic of PXA-s and had variable cellularity. The cytoplasm of many tumor cells contained an abundance of lipid droplets. Most tumor cells were positive for glial fibrillary acidic protein. The unusual feature about these tumors was the presence of very large numbers of tiny blood vessels with variable thickness of their walls. In many areas the small vessels and the neoplastic astrocytes were in close proximity to each other, with capillaries adjacent to or protruding into tumor cell cytoplasm, reminiscent of the pattern seen in highly vascularized or "angiomatous" meningiomas. In other areas extensive fibrosis was seen. We feel that the latter, as in the cases of comparably vascular meningiomas, had its origin in congelation and secondary organization of plasma proteins that have exuded through leaky walls of newly formed blood vessels. These are the first reported cases of PXA with an angiogliomatous pattern.

Adult↗