这个词是什么意思？
A vascular anomaly composed of a collection of large, thin walled tortuous VEINS that can occur in any part of the central nervous system but lack intervening nervous tissue. Familial occurrence is common and has been associated with a number of genes mapped to 7q, 7p and 3q. Clinical features include SEIZURES; HEADACHE; STROKE; and progressive neurological deficit.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D020786 · MeSH 2026。
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