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A congenital abnormality characterized by the outpouching or sac formation in the ILEUM. It is a remnant of the embryonic YOLK SAC in which the VITELLINE DUCT failed to close.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008467 · MeSH 2026。
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