血栓形成

例句：

1. 1.The patient was diagnosed with a blood clot in his leg, which caused the thrombosis.
   病人被诊断出腿部有血块，导致血栓。
2. 2.The doctor advised the patient to take anticoagulants to prevent further thrombosis.
   医生建议病人服用抗凝血剂以防止进一步的血栓形成。
3. 3. The surgery was complicated by the risk of postoperative thrombosis.
   手术由于术后血栓形成的风险而变得复杂。