医生在她的脑部扫描中发现了一个危险的动脉瘤。

The doctor found a dangerous ___aneurysm in her brain scan.

由于存在破裂风险，医生建议对这位患者的大脑动脉瘤进行手术。

Due to the risk of rupture, doctors recommended surgery for the ___aneurysms in the patient's brain.