I scrubbed in on a...an abdominal aortic aneurysm. It's a 12-hour surgery.

我曾参加一个...腹腔大动脉瘤手术。那手术持续12小时。

Shortly after the end of the Second World War he had begun to suffer from an abdominal aortic aneurysm, an enlargement of the abdominal aorta, the largest artery in the abdomen.

第二次世界大战结束后不久，他开始患有腹主动脉瘤，即腹主动脉（腹部最大的动脉）肿大。