冷冻肾脏肿瘤的效果与腹腔镜相当

 
一项最新研究显示：经由皮肤在影像介导下冷冻消融治疗肾脏肿瘤的效果，与腹腔镜治疗一样有效。

来自威斯康星大学医学院(Madison, USA)的研究人员，操作并对比了19例经由皮肤治疗和腹腔镜冷冻消融治疗的结果。在经由皮肤治疗方案中，介入放射科医生使用影像检查对肿瘤进行定位，然后经由皮肤插入冷冻探针。在冷冻消融过程中，氩气进入探针尖端，吸收周围细胞的热量，产生“冰球”从而冰冻并杀死肿瘤。

对比临床试验的结果显示：经由皮肤冷冻消融治疗后肿瘤复发率较低 (12.5 versus 10.5%)，住院时间较短，没有重大并发症，比腹腔镜治疗的住院费用要低59.5%。该治疗可以在全身麻醉下进行操作，但是经常只在局麻和清醒镇静条件下进行。在2007年3月美国西雅图(WA, USA)举行的第32届介入放射学会年会上进行了报道。

Freezing Kidney Tumors as Effective as Laparoscopy
 
A new study shows that image-guided treatment of kidney tumors by percutaneous cryoablation is as effective as the laparoscopic technique in viable candidates.

Researchers from the University of Wisconsin Medical School (Madison, USA) performed and compared 19 percutaneous and 48 laparoscopic cryoablations. In the percutaneous procedure, interventional radiologists used imaging to pinpoint the tumor, and then inserted the cryoprobe through the skin. During the cryoablation, argon gas entered the tip of the probe and extracted heat from the surrounding cells, resulting in an "ice ball" that froze and killed the tumor.

The results of the comparative trial showed that percutaneous cryoablation resulted in a slightly lower recurrence rate of the tumor (12.5 versus 10.5%), a shorter hospital stay, no major complications, and a 59.5% lower hospital cost than the laparoscopic treatment. The procedure can be performed under general anesthesia, but is often possible with only local anesthesia and conscious sedation. The study was presented at the Society of Interventional Radiology's 32nd annual scientific meeting, held during March 2007 in Seattle (WA, USA).