5岁男孩丹丹时常出现便秘,虽然给家长带来不少麻烦,但也没有太当回事。最近天气比较干燥,丹丹又不爱喝水,便秘又发生了。两天后,丹丹突然出现肚子剧痛,半天时间没有滴尿排出。小便潴留6个小时排不出来。到医院检查时,接诊医生发现其下腹部鼓了一个硬块,做泌尿系统彩超和生殖系统彩超检查发现,丹丹的直肠内蓄积了些许大便,双肾轻度积水,整个膀胱都装满了尿液,而腹部的肿块就是膀胱胀 5-year-old boy Dandan often appear constipation, although to parents a lot of trouble, but not too serious. Recently the weather is dry, Dandan do not like to drink water, constipation took place again. Two days later, Dandan suddenly appeared stomach pain, half a day without dropping urine. 6 hours urine retention can not row out. To the hospital for examination, the admissions doctor found his lower abdomen drum a hard block, do urinary system ultrasound and reproductive system color Doppler ultrasound examination found that Dandan accumulation of a little stool in the rectum, mild kidney water, the entire bladder is full The urine, and abdominal mass is bladder expansion