Pain in the right upper abdomen may be due to a lesion in the gallbladder or a lesion in the liver. More commonly, gallbladder stones cause cholecystitis, both acute and chronic. When acute inflammation of the gallbladder occurs, the right upper abdomen will have colic pain, which is very intense in nature, sometimes radiating to the right scapula, and accompanied by gastrointestinal symptoms, such as nausea, vomiting, and vomiting of stomach contents, and also accompanied by an increase in body temperature, or fever. In chronic cholecystitis, the pain in the right upper abdomen is not very severe, but vague or distending. Ultrasound of the gallbladder can reveal stones in the gallbladder, either single stones or multiple stones, and laparoscopic cholecystectomy is required after the diagnosis is clear. When the tumor increases in size and affects the liver envelope, it will lead to liver pain and distension in the right upper abdomen, which can be clearly identified by abdominal CT and enhanced CT.