Table I.

Reported cases of RCC growing into the renal pelvis.

Case	Reference, year	Age (years)/gender	CT description	Ureteroscopy or cystoscopy/biopsy	Preoperative diagnosis	Histological diagnosis
1	Munechika et al (3), 1990	22/M	Calcified tumor in the lower pole of the right kidney, renal pelvis and proximal ureter	Not performed	TCC	Mixed-type RCC
2	Chen et al (6), 1996	62/F	Tumor in the right kidney and renal pelvis	Not performed	Uncertain	RCC
3	Gulati et al (7), 2007	67/M	Irregular kidney mass and bladder mass	Cystoscopy revealed a 5-cm mass emanating from the left ureteral orifice/RCC	RCC	Clear-cell RCC
4	Fujita et al (8), 2011	43/M	Enhanced tumor in the left kidney, renal pelvis, ureter and bladder	Cystoscopy revealed no obvious tumorous lesion/not performed	RCC	Clear-cell RCC
5	Kitazono et al (4), 2011	64/M	Enhanced mass in the left kidney upper pole, renal pelvis and ureter	Not performed	Uncertain	Clear-cell RCC
6	Kitazono et al (4), 2011	77/F	Large mass in the right kidney invaded the pelvicaliceal system	Ureteroscopy confirmed pelvicaliceal involvement/not performed	Uncertain	Clear-cell RCC
7	Jeong and Kim (5), 2012	58/F	Enhanced left renal pelvic mass	Cystoscopy was negative for TCC/not performed	TCC	Clear-cell RCC
8	Kakutani et al (9), 2013	51/F	Contrasted tumor in the left, kidney renal pelvis, ureter and bladder	Cystoscopy revealed a tumor emanating from the left ureteral orifice/not performed	Renal pelvic tumor	Clear-cell RCC
9	Present study, 2015	51/M	Enhanced right renal pelvic mass	Ureteroscopy confirmed a renal pelvic mass/clear cell RCC	Clear-cell RCC	RCC

RCC, renal cell carcinoma; M, male; F, female; CT, computed tomography; TCC, transitional cell carcinoma.