Biliary-intestinal anastomosis, as an important part of digestive tract reconstruction, cannot be said to be very difficult, but it is certainly very important.
As for digestive tract reconstruction, the most challenging surgery is arguably the pancreas-gastric anastomosis, and the pancreaticoduodenectomy is one of the most difficult surgeries.
The difficulty of digestive tract reconstruction actually revolves around the small intestine!
Naturally, this difficulty lies in the handling of the small intestine.
Small intestine anastomosis may seem the simplest, but as the central link, it turns out to be the hardest.
Because it connects the stomach, biliary tract, and the pancreas,
these three important digestive organs, along with the small intestine, already make up ninety percent of the digestive tract.
As for colorectal anastomosis, it seems that it has never been given much attention by everyone.