noun
thoracic surgery
Medical specialty dealing with surgical treatment of organs inside the thorax (chest), such as the lungs, heart, and esophagus.
彼は胸部外科の専門医です。
He is a specialist in thoracic surgery.
胸部外科では肺や心臓の手術を行います。
In thoracic surgery, operations on the lungs and heart are performed.
Compound of 胸部 (きょうぶ, 'chest, thorax') and 外科 (げか, 'surgery').