婴幼儿泌尿系三聚氰胺结石影像检查特点

目的探讨婴幼儿泌尿系三聚氰胺结石的影像特点,总结不同影像检查的诊断价值。方法回顾分析17例婴幼儿泌尿系三聚氰胺结石的腹部平片、螺旋CT平扫和泌尿系超声检查表现,与7例非三聚氰胺结石病例的影像表现进行对照分析。结果17例三聚氰胺结石病例中,多发结石者8例,形态多不规则,CT值较对照组低,超声声像图显示结石强回声光团后方多伴淡声影或无声影。同时行腹部螺旋CT平扫和超声检查的病例中,2例CT发现的结石数量多于超声检查。结论三聚氰胺结石的影像特点为多发、体积小、密度低且形态不规则;腹部螺旋CT平扫对结石性状、数量及并发症的检出高于超声检查。

Imaging features of infantile urolithiasis resulted from melamine

Objective To investigate the imaging features of infantile urolithiasis resulted from Melamine and the diagnostic value of different imaging examinations.Methods The imaging data（including Abdominal plain films,Non-enhanced helic CT and Dopplor Ultrasound）of 17 infants with Urolithiasis caused by melamine（melamine group）were reviewed retrospectively and were compared with the data of control group comprised of 7 cases with urinary stones without relation to melamine（non-melamine group）.Results of the melamine group,8 cases could be found several stones in urinary tract.CT attenuation of the stones in melamine group were lower than those in non-melamine group.In two patients,the amount of stones were found with CT was more than that with US.Conclusions Multiple,small size and lower attenuation composed the imaging feature of melamine-related stone.Non-enhanced helic CT is more sensitive than US in diagnosing urinary stone.