Hi and welcome to HCM.
YOu didnt manetion why did you have full colectomy
If you had it cause of cancer then unfortunately some more serious diseases could affect your liver too. These findings you have mentioned are very serious and should be investigated. It can be liver, gallbladder
or even stomach. Any kind of hepatiits, biliary obstructive disorders or pancreatis can cause such symptoms and elevated lft,it is immposible to know exact cause without further findings. Ultrasound
is at least what should be done but CT scan oe ERCP would give more detailed answers.
Wish you good health.