这个词是什么意思？
Abnormal formation of blood vessels that shunt arterial blood directly into veins without passing through the CAPILLARIES. They usually are crooked, dilated, and with thick vessel walls. A common type is the congenital arteriovenous fistula. The lack of blood flow and oxygen in the capillaries can lead to tissue damage in the affected areas.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001165 · MeSH 2026。
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