这被称为深部静脉血栓症。

These are known as deep vein thrombosis (DVT).

因此你最好知道你的祖母是否有青光眼，或者你的妈妈是否有个兄弟很早就死于大范围冠状动脉血栓症。

So it's good to know whether grandma has glaucoma or your mom had a brother who died young of a massive coronary.