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A bluish-gray to gray-brown benign, melanocytic nevus found usually in the LUMBOSACRAL REGION of dark-skinned people, especially those of East Asian ancestry. It is usually congenital or appears shortly after birth, and disappears in childhood.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D049328 · MeSH 2026。
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