How dangerous is cholangiocarcinoma?

Slow growing but if. Not detected early, it can be dangerous. Completely removing the tumor allows 30 - 40% of patients to survive for at least 5 years, with the possibility of a complete cure. if the tumor cannot be completely removed, a cure is generally not possible. With treatment, about half of these patients live a year, and about half live longer.
It can be. Cholangiocarcinoma can be very difficult to treat depending on where it is located within the liver. Cancers outside the liver are amenable to treatment more so than cancers higher up in the bile duct. In most instances surgical resection is the best option but may not be possible.
Cholangiocarcinoma. It can be very dangerous and lethal. You need to consult with an oncologist and a bile duct expert.