Dear editor,The first extraction of a renal calculi through a percutaneous nephrostomy(PCNL)was described in 1976 by Fernstro¨m and Johansson[1].Through the collaboration of urology and interventional radiology,s...Dear editor,The first extraction of a renal calculi through a percutaneous nephrostomy(PCNL)was described in 1976 by Fernstro¨m and Johansson[1].Through the collaboration of urology and interventional radiology,several innovations were later made to improve what we know today as PCNL[2].Ever since PCNL was introduced,the basic concepts for stone treatment with a nephroscope were the need for good visualization,a method to fragment larger stones,and a mechanical means to remove the fragments.Initially we started with a 30-French instrument to meet those goals;the concept was to have a large enough channel to remove 1 cm stone fragments.This decision was arbitrary at the time,and not evidence based.展开更多
Dear editor,Cystic nephroma(CN)is a rare kind of tumor in the kidney,which has benign pathological features and biological behaviors but malignancy-like image manifestations.Pediatric CN is always associated with germ...Dear editor,Cystic nephroma(CN)is a rare kind of tumor in the kidney,which has benign pathological features and biological behaviors but malignancy-like image manifestations.Pediatric CN is always associated with germline DICER1 mutation and belongs to DICER1 syndrome,while adult CN which is now considered a different entity apparently has nothing to do with DICER1 mutation[1].The accurate preoperative diagnosis is of great importance in choosing proper treatment.This paper provides a case of adult CN as below.展开更多
文摘Dear editor,The first extraction of a renal calculi through a percutaneous nephrostomy(PCNL)was described in 1976 by Fernstro¨m and Johansson[1].Through the collaboration of urology and interventional radiology,several innovations were later made to improve what we know today as PCNL[2].Ever since PCNL was introduced,the basic concepts for stone treatment with a nephroscope were the need for good visualization,a method to fragment larger stones,and a mechanical means to remove the fragments.Initially we started with a 30-French instrument to meet those goals;the concept was to have a large enough channel to remove 1 cm stone fragments.This decision was arbitrary at the time,and not evidence based.
文摘Dear editor,Cystic nephroma(CN)is a rare kind of tumor in the kidney,which has benign pathological features and biological behaviors but malignancy-like image manifestations.Pediatric CN is always associated with germline DICER1 mutation and belongs to DICER1 syndrome,while adult CN which is now considered a different entity apparently has nothing to do with DICER1 mutation[1].The accurate preoperative diagnosis is of great importance in choosing proper treatment.This paper provides a case of adult CN as below.
