Results The most common clinical manifestations were abdominal pain,distention or discomfort in 16 cases(55.2%),abdominal mass in 9(31.0%),melena and hematemesis in 5 cases (17.2%).

• 结果临床主要表现为腹部疼痛和腹部不适34例,腹部包块10例,消化道出血8例;