substernal nontoxic goiter

例句：

1. 1. The patient was diagnosed with subclavian nontoxic goiter and underwent surgery to remove the enlarged thyroid tissue.
   患者被诊断出患有胸主动脉非毒性甲状腺肿，并接受了手术以移除肿大的甲状腺组织。
2. 2. The condition isoften associated with anemia and can be treated with medication to reduce the swelling and inflammation of the goiter.
   这种状况通常与贫血有关，可以通过药物治疗来减少甲状腺肿的肿胀和炎症。
3. 3.In some cases, subclavian nontoxic goiter may lead to complications such as heart failure or arrhythmias if left untreated.
   在某些情况下，未经治疗的胸主动脉非毒性甲状腺肿可能导致并发症，如心力衰竭或心律失常。