noun
surgical treatment; surgery
Medical term for treatment involving a surgical procedure, as opposed to medication or other therapies.
この病気には外科治療が必要です。
This disease requires surgical treatment.
手術 refers to a surgical operation or procedure itself, while 外科治療 is a broader term for surgical treatment as a category of medical care.
Compound of 外科 (surgery) and 治療 (treatment).