The organs located in the right upper abdomen include colon, duodenum, liver and gallbladder. Hidden pain in the right upper abdomen needs to be alerted to gastric and duodenal diseases, diseases in the colon area as well as liver and gallbladder diseases. 1. Gastric and duodenal diseases: when there is an ulcer in the gastric sinus and duodenal bulb, the symptoms of vague pain in the right upper abdomen will appear under the stimulation of inflammation; in addition, gastric and duodenal tumors can also lead to pain in the right upper abdomen. 2. Diseases of colon: common diseases of colon, such as colon cancer, colon tumor, etc., if the lesion site is in the colon near the liver area, the area where the pain occurs is also located in the right upper abdomen. 3. Liver and gallbladder diseases: Liver diseases such as hepatitis, cirrhosis, liver tumors, etc., gallbladder diseases such as cholecystitis, gallbladder stones, gallbladder tumors, etc., can cause pain symptoms in the upper right abdomen. There are more causes of right epigastric pain, when there is right epigastric pain, you can do gastroscopy, ultrasound and other tests to make a clear diagnosis, and treatment under the guidance of the doctor.