这个词是什么意思？
Enlargement of the BREAST in the males, caused by an excess of ESTROGENS. Physiological gynecomastia is normally observed in NEWBORNS; ADOLESCENT; and AGING males.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D006177 · MeSH 2026。
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