This is a radiating pain symptom of cholecystitis. Because the artery of the gallbladder originates from the common hepatic artery, when the hepatic artery is cannulated for chemotherapy (intervention), some of the chemotherapy drugs will enter the gallbladder causing inflammation. The site of pain in cholecystitis is usually the middle of the right lower rib cage, but due to sensory nerve conduction factors, there is also involvement of the right shoulder. Rest for a while, you can take some antipyretic and analgesic drugs such as Cilpro, and it is also good for controlling the fever after the intervention. If the pain is really bad, report it to the doctor, don’t hold it in.