dropsy of serous cavity

例句：

1. 1. The patient had a dropsy of the brain that required surgery.
   这名患者患有脑积水，需要进行手术。
2. 2.The doctors found a dropsy in the patient's brain that could be life-threatening.
   医生们在患者的脑部发现了一个可能导致生命危险的脑积水。
3. 3. Dropsy can be caused by various factors, including congenital abnormalities and tumors.
   脑积水可以由多种因素引起，包括先天性异常和肿瘤。