患儿,男,25天。因发现腹部肿块24天,于2006年12月19日入院。患儿发病以来,一般状况良好,饮食尚可,二便正常,无发热恶寒,未伴恶心、呕吐。查体:腹部膨隆,脐周可触及一实性肿块,大小约7cm×8cm,质稍硬,边界清晰,无明显触痛,可随呼吸上下移动,余未见异常。辅助检查:(1)上腹部MRI提 Children, male, 25 days. Abdominal mass was found for 24 days and was admitted on December 19, 2006. Since the onset of children, the general condition is good, diet is acceptable, two will be normal, no chills, no nausea and vomiting. Physical examination: bulging abdomen, umbilical weeks can reach a solid mass, the size of about 7cm × 8cm, the quality of slightly harder, the boundary is clear, no obvious tenderness, can move up and down with the breath, I did not see abnormalities. Auxiliary examination: (1) upper abdominal MRI mention