女,7岁。偶然发现下腹部偏右侧有一鹅蛋大小包块。包块逐渐增大,自觉腹部胀坠感,并出现食欲减退,全身乏力,行走困难。查体:慢性病容,贫血貌,腹部可扪及23×21×18厘米包块,质韧、活动度不大,有轻压痛,肝未及,腹水征(一)。B超:腹腔内上自第四肋间下至盆腔为无回声液性暗区, Female, 7 years old. Occasionally found on the right side of the lower abdomen there is a size of a goose egg mass. Mass gradually increased, conscious sense of abdominal distension, and loss of appetite, malaise, walking difficulties. Physical examination: chronic disease, anemia appearance, palpable abdominal and 23 × 21 × 18 cm mass, quality and toughness, activity is not large, mild tenderness, liver and ascites (a). B 超: Intraperitoneal from the fourth intercostal space to the pelvic anechoic liquid dark area,