Thank you for the query.
Psychosomatic theory should be considered only if all other reasons will be ruled out. Upper right abdominal pain
in the patients after gallbladder removal can be caused by gallstones in the bile ducts, pancreas disease, peptic ulcer
. Large intestine is in this area as well and some diseases affecting it can give the pain in this area.
Gallstones in bile ducts are more possible if the pain radiates to the back, nausea appears. Urine can get darker and stool whitish.
Peptic ulcer is more probable if the pain appears after 1-2 hours from the meal, does not radiate to the back.
Large intestine disease should be always ruled out in people older than 50. Symptoms which can be present with this condition are constipation
, diarrhea, weight lost, weakness, bloating, blood in stool
I suggest your mother to have abdominal ultrasound, blood work, liver tests (AST,ALT,GGTP), amylase, urine amylase, bilirubin, urine analysis. If nothing will be found, upper GI endoscopy should be the next step. If large intestine disease seems possible, also colonoscopy
should be done.
Hope this will help.