Hello! Thanks for putting your query in HCM. I am a Gastroenterologist (DM).
Development of fever and abdominal pain
and litre of bile in abdominal cavity suggest that there was injury to billiary tract for which drain was placed and ERCP stenting was done. Weight loss
may be due to cholangitis
. If still he is having pain and after stenting may suggest that he is still having billiary tract obstruction. And this obstruction should be relieved.
However I will like to see all the reports like Ultrasound
abdomen, blood tests previous and latest one, so that I can advise you clearly what to do now. Also upload reports of Gallbladder
histopathology report. Please upload exact sequence of events with mentioning of dates like when surgery was done, open or laproscopic. When did the symptoms started, when was drain placed,when was ERCP done, blood reports before and after ERCP. So all reports and prescription slips also if feasible.
I hope I have answered your query and this will help you. Remain in touch and get-well soon.