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女,10个月。间断阴道出血8个月来诊。出生时乳房较大,别无其它异常现象。自生后三个月起,出现阴道出血,以后每月一次。阴道出血规律,每28～30天一次。每次出血量不多,持续出血4～5天即自行停止。患婴为第一胎,第一产,足月顺产,生后哭声响亮。出生时体重3.1kg。母孕期身体健康,无服避孕药史。生后母乳喂养。未误服过雌激素类药物,父母身体均健康。非近亲婚配,母婚后从未用过避孕药。体格检查:营养及体格发育好,面色稍苍黄,乳房明显隆起,直径8cm,乳晕呈深褐色,直径1.5cm,
Female, 10 months. Intermittent vaginal bleeding 8 months to consult. Breast at birth larger, no other anomalies. Three months after birth, vaginal bleeding occurs, after once a month. Vaginal bleeding rules, once every 28 to 30 days. Small amount of bleeding each time, sustained bleeding 4 to 5 days to stop on their own. Infant with the first child, the first birth, term full-term, after birth, cry loudly. Birth weight 3.1kg. Pregnant during pregnancy, no history of contraceptives. After birth breastfeeding. Have not mistakenly taken estrogen drugs, both parents are healthy. Non-relatives marriage, mother’s marriage never used birth control pills. Physical examination: good nutrition and physical development, looking slightly pale yellow, breast prominent bulge, diameter 8cm, areola dark brown, diameter 1.5cm,