Gore M D, Fernbach S K, Donaldson J S, Shkolnik A, Zaontz M R, Kaplan W E
Department of Radiology, Northwestern University, Chicago, IL.
AJR Am J Roentgenol. 1989 Jan;152(1):115-9. doi: 10.2214/ajr.152.1.115.
The imaging studies of 83 children (115 ureters) with vesicoureteral reflux who were treated by subureteric injection of Teflon (STING) were reviewed. On plain films, the Teflon rarely may be seen as faintly radiodense. On sonography, it is echogenic and has variable acoustic shadowing. On CT it is dense (160-466 H). Postsurgical cystography showed cessation of reflux in 83 ureters (72%). Complications of STING were uncommon. No granulomatous masses were identified in the region adjacent to the STING. Transient, free peritoneal fluid developed in three children and ureteral dilatation in six, three of whom required intervention. In one child, most of the Teflon disappeared from the original site of injection, as noted on a follow-up CT scan; possibly it had been extruded into the bladder. The STING procedure probably will become more popular. Knowledge of its radiologic appearance is important for the radiologist in order to effectively evaluate these children postoperatively.
回顾了83例经输尿管下注射聚四氟乙烯（STING）治疗的膀胱输尿管反流患儿（115条输尿管）的影像学研究。在平片上，聚四氟乙烯很少能被视为轻度放射性致密影。在超声检查中，它呈高回声，并有可变的声影。在CT上它是高密度的（160 - 466 H）。术后膀胱造影显示83条输尿管（72%）反流停止。STING的并发症并不常见。在STING邻近区域未发现肉芽肿性肿块。3例患儿出现短暂的游离腹腔积液，6例出现输尿管扩张，其中3例需要干预。在1例患儿中，如随访CT扫描所示，大部分聚四氟乙烯从注射的原始部位消失；可能它已被挤出到膀胱中。STING手术可能会变得更受欢迎。了解其放射学表现对放射科医生有效评估这些患儿术后情况很重要。
