Talk:Percutaneous nephrolithotomy

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Really it is suitable for stone more then 2 cm in size?

There is a article simpsons'paradox in wikipedia where this method is compared with open surgery method. There are desribed as treetment A and B but I have looked original paper. Open surgery achieved better results in both case (small and big size of stones, boundary was 2 cm as well), but because these method was used preferently for small size stones (that are generally easier treated), the grand average showed false result, that Percutaneous nephrolithotomy is more effective.

So I am not specialist, but from this is evident that this method can be effective using only for small stones. According this article (Britis medical journal vol. 292, page 879 - 882) 77% patients treated by Percutaneous nephrolithotomy had stones smaller then 2 cm. --212.5.210.202 (talk) 10:55, 22 May 2008 (UTC)