Fig. 2

The procedures of kidney ventrally rotation technique for posterior hilar tumor. a The posterior hilar tumor (white arrow) was adjacent to the renal artery (red arrow) and could not be exposed thoroughly. b The ventral peritoneum was incised at the weakness. c Extend the peritoneum incision up to the upper pole of kidney and cut the triangular ligament and the hepatocolic ligament if necessary. d Extend the peritoneum down to the lower pole of the kidney. e Cut the fat tissue of the upper pole of the kidney. f Cut the fat tissue of the lower pole of the kidney. g Rotate the kidney ventrally and improve the tumor exposure, thus the anatomic relationship between tumor (white arrow) and renal artery (red arrow) was exposed clearly. h The tumor bed after resection or enucleation, which was convenient to be sutured. i The kidney after suture completion