Multiple burr-hole operation for adult moyamoya disease
1996
✓ Excellent results from multiple burr-hole operations for adult moyamoya disease are reported in this study. Ten patients had between one and four burr holes (mean 2.1) drilled in each hemisphere. In four patients new burr holes were added on the opposite side after depression of cerebral blood flow (CBF) was detected by follow-up single-photon emission computerized tomography imaging of the brain with N-isopropyl-p-[123I]iodoamphetamine. The postoperative follow-up period ranged from 6 to 62 months (mean 34.7 months). Beginning at 6 months postsurgery, angiograms disclosed rich neovascularization at 41 of 43 burr holes, first from the middle meningeal artery, then from the superficial temporal artery. Neovascularization did not occur at two burr holes at which there was subdural effusion and local cerebral atrophy, respectively. Progression of stenosis of the major vessels was seen in six patients. Moyamoya vessels were decreased at six sites in four patients. The CBF study revealed that the reactivity ...
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