The organs under the right side of the rib cage, as mentioned by the patient, are mainly the liver, gallbladder, colon, and duodenum. In most cases, if the right upper abdomen and the back are distended and painful, the patient’s liver and gallbladder may have lesions. Firstly, the patient should have an ultrasound of the upper abdomen, especially on an empty stomach, so that the patient’s gallbladder and biliary tract can be observed more accurately to see whether there are occupying lesions in the patient’s liver, and whether the size of the patient’s liver is shrinking or increasing. Next, the patient’s gallbladder is looked at for stones and inflammation, and for grossness in the gallbladder wall. If there is suspicion of occupying lesions in the patient’s liver, further enhanced CT examination of the upper abdomen and fetoprotein test should be considered to see if there is a possibility of primary tumor in the liver, and MRI should be done to see if there is a possibility of hemangioma or other diseases in the patient’s liver. In addition, further liver function tests are needed to see if there is any further increase in bilirubin.