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一例13q缺失胎儿的产前遗传学诊断 被引量:2

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摘要 本文报道一例13q缺失综合征胎儿的产前分子诊断经过及妊娠结局。孕妇于孕16周行无创产前检测,结果提示胎儿13号染色体Z值为-3.73,故于孕17周行胎儿羊水染色体核型分析,结果示46,XX,del(13)(q13q22)。进一步高分辨率染色体微阵列分析提示胎儿染色体存在13q13.3-q31.1杂合性缺失(38343786—81779413),片段长度约43Mb。文献报道显示该片段缺失可能导致视网膜母细胞瘤、特殊面容、神经-精神系统异常、发育落后及其他畸形等,而产前超声可不表现胎儿结构异常。孕22周超声检查见胎儿双肾弥漫性实质回声增强,充分告知遗传学风险后孕妇选择终止妊娠.
出处 《中华围产医学杂志》 CAS CSCD 北大核心 2018年第2期126-129,共4页 Chinese Journal of Perinatal Medicine
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