placentoma

例句：

1. 1. Theplacentoma was removed during the surgeryto prevent infection.
   在手术中切除了胎盘瘤以防止感染。
2. 2. The patient'scondition worsened after the placentomawas discovered.
   患者发现胎盘瘤后病情恶化。
3. 3. The doctors performed a biopsyon the placentoma to determine itscause.
   医生对胎盘瘤进行了活检以确定其原因。