noun
minor surgery; minor operation
Refers to a surgical procedure that is not major or life-threatening, often outpatient or with quick recovery.
この小手術は日帰りで受けられます。
This minor surgery can be done on an outpatient basis.
彼は膝の小手術を受けた。
He underwent a minor operation on his knee.
手術 is the general term for 'surgery' or 'operation', without specifying scale.
Compound of 小 (small, minor) and 手術 (surgery).