The main symptoms of right hemicolectasis include the following: 1. abdominal pain may appear, which is not felt in the early stage, but will become persistent distension and pain when the disease becomes more serious. 2. abdominal masses may appear, which are usually in the right upper abdomen, with nodular objects and pressure pain when touched by hand. In the early stage, it is possible to move around, but when the situation becomes serious, it is usually not possible to move around, and intestinal obstruction may occur. 3, blood in the stool and anemia may occur, but this symptom is relatively rare. When the frequency and volume of blood in stool increase, it may lead to anemia. Once you have right hemicolectomy, you should go to hospital for treatment at the first time.