患儿，男，３岁。因进行性腹胀、消瘦１年余入院。无腹痛及呕吐，大小便正常。体检：消瘦体型，胸部呈“漏斗状”，肋间隙变窄，心肺无异常。腹部极度膨隆，腹围６６ｃｍ。肿块边缘不清，表面光滑，张力低，柔软囊性感，无压痛，肝脾触诊不满意，巨腹呈浊音，无移动性浊音... Children, male, 3 years old. Due to progressive bloating, weight loss more than 1 year admission. No abdominal pain and vomiting, normal urine. Physical examination: weight-loss body, the chest was “funnel-shaped” narrowed intercostal space, no abnormal heart and lung. Extremely bulging abdomen, abdominal circumference 66cm. Lump edge unclean, smooth surface, low tension, soft capsule sexy, no tenderness, palpation of liver and spleen dissatisfaction, abdominal Juvenile was voiced, no movement dullness ...