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Ice Ball Cracks on CT During Cryoablation for Renal Tumors: A Retrospective Analysis.
CardioVascular and Interventional Radiology ( IF 2.9 ) Pub Date : 2020-03-19 , DOI: 10.1007/s00270-020-02454-0
Yusuke Ichijo 1, 2 , Hiroshi Miura 1 , Tatsuya Hirota 1 , Shunsuke Asai 1 , Mitsuhiro Hisano 1 , Fumiya Hongo 3 , Osamu Ukimura 3 , Tetsuya Katsumori 4 , Kei Yamada 1
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PURPOSE To evaluate the frequency of ice ball cracks on CT during cryoablation of renal tumors and assess the severity of hemorrhagic complications associated with this finding. MATERIALS AND METHODS Between March 2014 and March 2019, 130 patients underwent CT-guided cryoablation using cryoprobes with a diameter of 1.5 mm for 138 renal tumors (mean diameter, 23.6 mm; standard deviation [SD], 7.5; range, 8.3-43). Two blinded board-certified radiologists retrospectively reviewed the presence of cracks on CT obtained during the procedure. The incidence of major hemorrhage and changes in hemoglobin levels after cryoablation were examined. Factors influencing the appearance of ice ball cracks were assessed with multivariate analyses. RESULTS Cracks were observed in 25 of the138 procedures (18%). Inter-reader reliabilities with kappa statistics were 0.90 and 0.84 for first and second freeze sessions, respectively. There were no major hemorrhagic events requiring blood transfusion or arterial embolization. Mean (± SD) decreases in hemoglobin levels between pre- and postoperative day 1 were 1.15 ± 0.86 g/dl in the cracks group and 1.01 ± 0.80 g/dl in the no cracks group with no significant difference (p = 0.14). Multivariate analyses identified a higher number of cryoprobes (odds ratio, 4.1; 95% confidence interval [CI] 1.7-11; p = 0.001) and no hydrodissection (odds ratio 6.7; 95% CI 2.1-28; p < 0.001) as factors associated with ice ball cracks. CONCLUSION Ice ball cracks were frequently observed on CT during cryoablation for renal tumors and were seemingly self-limiting events requiring no intervention.

中文翻译:

肾肿瘤冷冻消融期间CT上的冰球裂纹:回顾性分析。

目的评估肾肿瘤冷冻消融过程中CT上冰球破裂的频率,并评估与此结果相关的出血并发症的严重性。材料与方法在2014年3月至2019年3月之间,有130名患者使用直径1.5毫米的冷冻针进行138例肾脏肿瘤的CT引导冷冻消融术(平均直径23.6毫米;标准偏差[SD] 7.5;范围8.3-43)。 。两名不知情的董事会认证放射科医生对手术过程中获得的CT裂纹进行了回顾。冷冻消融后检查了大出血的发生率和血红蛋白水平的变化。通过多变量分析评估影响冰球裂纹外观的因素。结果138例手术中有25例(18%)观察到裂纹。读者间的kappa统计信度为0。第一次和第二次冻结会话分别为90和0.84。没有需要输血或动脉栓塞的重大出血事件。术后第1天和术后第1天,血红蛋白水平的平均(±SD)降低为1.15±0.86g / dl,无裂纹组为1.01±0.80g / dl,无显着性差异(p = 0.14)。多变量分析确定了冷冻披肩的数量较多(奇数比为4.1; 95%置信区间[CI] 1.7-11; p = 0.001),无水解剖(奇数比为6.7; 95%CI 2.1-28; p <0.001)与冰球裂缝有关。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。没有需要输血或动脉栓塞的重大出血事件。术后第1天和术后第1天,血红蛋白水平的平均(±SD)降低为1.15±0.86g / dl,无裂纹组为1.01±0.80g / dl,无显着性差异(p = 0.14)。多变量分析确定了冷冻披肩的数量较多(奇数比为4.1; 95%置信区间[CI] 1.7-11; p = 0.001),无水解剖(奇数比为6.7; 95%CI 2.1-28; p <0.001)与冰球裂缝有关。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。没有需要输血或动脉栓塞的重大出血事件。术后第1天和术后第1天,血红蛋白水平的平均(±SD)降低为1.15±0.86g / dl,无裂纹组为1.01±0.80g / dl,无显着性差异(p = 0.14)。多变量分析确定了冷冻披肩的数量较多(奇数比为4.1; 95%置信区间[CI] 1.7-11; p = 0.001),无水解剖(奇数比为6.7; 95%CI 2.1-28; p <0.001)与冰球裂缝有关。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。术后第1天和术后第1天,血红蛋白水平的平均(±SD)降低为1.15±0.86g / dl,无裂纹组为1.01±0.80g / dl,无显着性差异(p = 0.14)。多变量分析确定了冷冻披肩的数量较多(奇数比为4.1; 95%置信区间[CI] 1.7-11; p = 0.001),无水解剖(奇数比为6.7; 95%CI 2.1-28; p <0.001)与冰球裂缝有关。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。术后第1天和术后第1天,血红蛋白水平的平均(±SD)降低为1.15±0.86g / dl,无裂纹组为1.01±0.80g / dl,无显着性差异(p = 0.14)。多变量分析确定了冷冻披肩的数量较多(奇数比为4.1; 95%置信区间[CI] 1.7-11; p = 0.001),无水解剖(奇数比为6.7; 95%CI 2.1-28; p <0.001)与冰球裂缝有关。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。p = 0.001)和无水力解剖(比值6.7; 95%CI 2.1-28; p <0.001)作为与冰球裂纹相关的因素。结论冷冻消融术在肾脏肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。p = 0.001)和无水力解剖(比值6.7; 95%CI 2.1-28; p <0.001)作为与冰球裂纹相关的因素。结论冷冻消融术在肾肿瘤的CT上经常观察到冰球破裂,并且似乎是自限性事件,无需干预。
更新日期:2020-03-20
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