The abdomen is located at the front of the body between the pelvis and the chest. Anatomically the area above the pelvis and below the chest is called the abdomen. There are many organs in the abdomen including the stomach, spleen, liver, gallbladder, large intestine, small intestine, kidneys, ureter, appendix, pancreas, uterus and ovaries. The abdomen is divided into the upper abdomen, lower abdomen, different locations correspond to different organs, for example, cholecystitis can manifest as right upper abdominal pain, appendicitis manifests as right lower abdominal pain, cholangitis manifests as pain in the middle of the upper abdomen, and diseases of the stomach manifests as pain in the upper abdomen. If you have pain or lumps in the abdomen, you must go to the regular hospital to find out the cause of the disease, through x-ray, ultrasound and other ways to clarify the cause of the disease, so as not to delay the condition and miss the best treatment period.