Placental chorioangioma is the most common benign tumor of placenta 摘要胎盘绒毛膜血管瘤是胎盘最常见的良性肿瘤。
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We present a case of large placental chorioangioma with acute polyhydramnos in which polyhydramnios and prematurity are the main complication 我们报告一个胎盘绒毛膜血管瘤合并急性羊水过多的案例，羊水过多和引发的早产是最主要的并发症。
