Proposal for a Simple Anatomical Classification of the Pelvicaliceal System for Endoscopic Surgery

Journal of Endourology
Ryoji TakazawaToshihiko Tsujii

Abstract

We herein propose a nomenclature for renal calices and anatomical classification of the renal pelvis for endoscopic surgery. We prospectively collected data on a total of 270 patients (540 kidneys) who underwent CT-urography. We then constructed three-dimensional images of the renal pelvis and examined their morphologic classification. Forty-eight kidneys were excluded from this study because of severe hydronephrosis or large renal cysts. The remaining 492 kidneys were included. We systematically categorized each minor calix into five levels: top, upper, middle, lower, and bottom. The upper, middle, and lower calices were typically found in pairs: anterior and posterior. The most common total number of minor calices was eight (51%), followed by seven (30%). We also classified the form of the pelvis into type I: single pelvis (58%) and type II: divided pelvis (42%), according to the branch patterns of the renal pelvis. In type II, the renal pelvis is always bifurcated into the upper branch (top and upper) and lower branch (middle, lower, and bottom). Type I was subclassified into three types: type Ia (43%), the standard type; type Ib (4%), with a wide pelvis; and type Ic (11%), with a narrow pelvis. This anatomical classificatio...Continue Reading

References

Oct 1, 1983·The Journal of Urology·K W Kaye
Jun 17, 2011·Urology·Murat BinbayAhmet Yaser Muslumanoglu
Dec 8, 2011·International Journal of Urology : Official Journal of the Japanese Urological Association·Ryoji TakazawaToshihiko Tsujii
Jul 20, 2012·World Journal of Urology·Ozgur YaziciAhmet Yaser Muslumanoglu
Aug 3, 2012·International Journal of Urology : Official Journal of the Japanese Urological Association·Ryoji TakazawaToshihiko Tsujii
Apr 2, 2013·European Urology·Morgan RouprêtUNKNOWN European Association of Urology
Jul 4, 2013·International Journal of Urology : Official Journal of the Japanese Urological Association·Ryoji TakazawaToshihiko Tsujii
Jun 26, 2014·World Journal of Urology·Guido GiustiPierpaolo Graziotti
Jan 18, 2017·Journal of Endourology·Robert M GeraghtyBhaskar K Somani
Mar 23, 2017·Journal of Endourology·Ryuta TanimotoDemetrius H Bagley

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Citations

Dec 18, 2020·Journal of Endourology·Yuma WasedaToshihiko Tsujii

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