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目的分析输尿管膀胱壁内段结石并发膀胱充盈缺损(bladder filling defect,BFD)的CT征象以及两者的关系。资料与方法回顾分析52例急性肾绞痛患者伴输尿管膀胱壁内段结石的CT图像,包括结石是否伴BFD,结石的大小和梗阻情况与BFD的关系。结果52例中,32例可见BFD,其中28例为形态规则的充盈缺损,4例为形态不规则的充盈缺损。在输尿管膀胱壁内段结石伴有BFD阳性者中,69.5%出现明显的输尿管梗阻征象。输尿管膀胱壁内段结石伴有BFD阳性者结石平均直径为4.01mm,阴性者平均直径为4.55mm,结石大小与BFD征象无明显关系(P>0.05)。结论急性肾绞痛患者中,“膀胱充盈缺损征”阳性强烈提示膀胱输尿管口的钙化为结石。
Objective To analyze the CT signs of bladder filling defect (BFD) in the ureteral calculi and the relationship between them. Materials and Methods Retrospective analysis of 52 cases of acute renal colic patients with urinary bladder wall stones CT images, including stones with BFD, the size and obstruction of stones and BFD relationship. Results Among the 52 cases, BFD was found in 32 cases, of which 28 cases were regular filling defects and 4 cases were irregular filling defects. In the ureteral calculi with BFD-positive stones, 69.5% showed obvious symptoms of ureteral obstruction. Ureteral wall stones with BFD-positive stones were 4.01mm in diameter and negative in the mean diameter was 4.55mm. There was no significant correlation between the size of stone and BFD signs (P> 0.05). Conclusions In patients with acute renal colic, the positive bladder filling defect signifies a strong calcification of the bladder ureter.