病例1,男,3岁。患儿于入院十余天前出现尿频、尿滴沥,门诊超声无异常,尿常规示白细胞、红细胞增多,予抗炎治疗后无改善,10d后患儿出现尿痛及肉眼血尿,超声示膀胱腔内探及27mm×15mm实质性稍低回声团,紧贴膀胱壁(图1)。尿常规白细胞、红细胞较前明显增多,遂收治入院,查体未见明显异常。行腹部CT平扫+增强示:膀胱后下壁占位性病变,向下侵犯前 Case 1, male, 3 years old. Children with urinary frequency, urinary drip drip more than ten days before admission, no abnormal out-patient ultrasound, urinary routine showed white blood cells, red blood cells increased, anti-inflammatory treatment without improvement after 10 days, children with dysuria and gross hematuria, ultrasound showed bladder Explore and 27mm × 15mm substantially lower echogenic mass, close to the bladder wall (Figure 1). Urinary routine white blood cells, red blood cells significantly increased compared with the previous, then admitted to hospital, physical examination showed no significant abnormalities. Line abdominal CT scan + enhancement showed: posterior wall of the bladder space-occupying lesions, down before the violation