Figure 1

Percutaneous nephroscopy for renal pelvis tumor 3A, appearance of the tumor under flexible ureteroscopy; 3B, laser resection of the tumor; 3C, remove the tumor with stone basket; 3D, burn the tumor base with laser; 3E, check the residual tumor with the narrow band imaging (NBI)."

Figure 2

Small tumor under the narrow band imaging (NBI), the tumor is brown and appears as “frog eggs” "

Figure 3

Resection of the tumor by flexible ureteroscopy"

Figure 4

During the operation of percuteanous nephroscopy combined with flexible ureteroscopy, flexible ureteroscope can monitor the puncture process of the percutaneous nephroscope, and deal with the places that difficult to be observed by the percutaneous nephroscope (4A), the percutaneous nephroscope can deal with the large volume tumor of the inferior renal calyx (4B) "