医生发现他腿部的静脉已经血栓形成，必须尽快治疗。

The doctor found that the vein in his leg had ___thrombosed and needed urgent treatment.

长时间站立后，她的痔疮血栓形成了，非常不舒服。

After standing for too long, her hemorrhoid became ___thrombosed and very uncomfortable.