Walther J M, Romas N A, Lowe F C
J Urol. 1987 Sep;138(3):614-6. doi: 10.1016/s0022-5347(17)43276-9.
A small amount of barium extravasated at the time of colonic surgery led to the development of a barium granuloma that caused unilateral ureteral obstruction. Although the barium was not detected on radiography or urography preoperatively, it was clearly visible at the time of ureteral exploration and ureterolysis.
结肠手术时少量钡剂外渗导致钡剂肉芽肿形成，进而引起单侧输尿管梗阻。尽管术前X线摄影或尿路造影未检测到钡剂，但在输尿管探查和输尿管松解时钡剂清晰可见。
