Prof. Dr. de Lacy was the first specialist in the world to remove the gallbladder through the mouth. On the third day after hospitalization, the patient was discharged from the hospital.
In 2010, the doctor was the first in the world to remove a patient's colon.
He is the founder of laparoscopic surgery for colorectal cancer. In 2009, he performed the world's first rectal extraction surgery using a new technique called TaTME (transanal total mesorectal excision). The professor now trains and passes on his knowledge to the next generation of surgeons.
Prof. de Lacy pioneered the method of transluminal endoscopic surgery (NOTES), which provides access to the abdominal cavity through natural orifices.