One consideration for RUQ pain in those who had their gallbladder removed would be Sphincter of Oddi dysfunction. This can present with gallbladder-like pain in those without one. Typically this disorder is unmasked after removal of the gallbladder.
The gold-standard test for this would be an ERCP with Sphincter of Oddi manometry. Another test to consider before this one would be a fatty-meal ultrasound.
If there is evidence of dysfunction, treatment can involved surgery, or endoscopic treatment (i.e. there are some trials with injection of botulinum toxin).
Another consideration would be the presence of stones in the bile ducts. Again the ERCP, or an MRCP, would be an appropriate test to investigate this possibiity.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b