pectus excavatum

例句：

1. 1. The patient had a pectus excavatum, which made it difficult for him to breathe properly.
   患者有胸骨凹陷，这使他呼吸不太正常。
2. 2. The doctor advised the patient to undergo surgery to correct his pectus excavatum.
   医生建议患者接受手术来纠正他的胸骨凹陷。
3. 3. The child's pectus excavatum was causing discomfort and pain during sleep.
   孩子的胸骨凹陷在睡眠时造成了不适和疼痛。