Clinicopathological characteristics and typing of multilocular cystic renal neoplasm of low malignant potential

Table 1 General information of patients

Medical data1	Renal cyst	Cyst combined with renal tumor	P value
Age (continuous)			0.35
Mean (IQR)	62 (50–72)	59 (51–68)
Sex (No. of cases)			0.72
Male, n (%)	675 (57.94)	180 (50.70)
Side (No. of cases)			0.16
Left, n (%)	561 (48.15)	165 (46.48)
Cyst diameter (cm)			0.27
Mean (IQR)	12 (9–14)	7 (6–9)
Operation method (No. of cases), n (%)			< 0.001
Renal cyst topping decompression	1165 (100.0)	346 (97.46)
Radical nephrectomy	0	3 (0.85)
Nephron sparing surgery	0	6 (1.69)
Pathological type (No. of cases), n (%)			< 0.001
Renal cyst	1132 (97.18)	312 (87.89)
MCRNLMP	33 (2.82)	43 (12.11)
Fuhrman grade (No. of cases), n (%)			0.06
I	13 (39.39)	26 (60.47)
II	20 (60.61)	17 (39.53)

¹Continuous variables were compared by independent samples t-test.

IQR: Interquartile range; MCRNLMP: Multilocular cystic renal neoplasm of low malignant potential.