@First_Mate_Zoro
Even without the anesthesia aspect, the post-op recovery was going to be a huge deal. As you can image, cutting up a person's abdomen is no laughing matter. In the scenario that Doctor Koto did nothing after opening hip um, this old man is going to be bed-bound for at least 2-3 days. He will need an IV for fluid and considering that the gastrointestinal tract was touched upon, might need to be NPO (nothing per oral) for 1 or 2 days. If he can't move, he will also need a foley's catheter. This would expose him to a slew of condition in the undoubtedly not that sanitary clinic, including urinary tract infection, atelectasis, pneumonia, and god knows what. During his bed-bound period, his muscle will also waste away due to malnutrition. He would likely need physical rehabitation in order to walk again.
And that is if Koto did nothing. Assuming that Koto decided to do something, that would be Whipple's operation (the "cure" for pancreatic cancer), AKA pancreaticoduodenectomy AKA cutting away the pancrease and part of intestine, then stitching the rest together. It is a huge operation which undoubtedly puts tremendous strain on a patient. As his intestine was stitched together, the patient would need to be NPO for at least 3 days, sometimes up to 7 days. As you can imagine, you will need to multiply all the complications above by a lot, all of which can potentially kills him. Even if he is "cured" of his cancer, he might die 2 weeks later from a hip fracture caused by simple fall. This does not count the mandatory chemotherapy or radiation therapy which he might need afterward.
What is most important is definitely not only the success of the surgery, but what the quality of life of the patient will be after that, for a surgeon who only cares about his surgery is not a doctor, but only a butcher.