1. A medical procedure performed by a surgeon using instruments to treat, repair, or remove diseased tissue or organs
The patient underwent a surgical operation to remove the tumor.
O paciente se submeteu a uma operação cirúrgica para remover o tumor.
2. Any invasive medical intervention requiring anesthesia and sterile conditions
The surgical operation was successful and the patient recovered well.
A operação cirúrgica foi bem-sucedida e o paciente se recuperou bem.