Table 1 Patient clinical characteristics and histologic types

Age, median (range, years)

50 (18–84)

56 (18–86)

 < 0.001

Gender, n (%)

 < 0.001

 Female

273 (68.4)

418 (29.9)

 Male

126 (31.6)

978 (70.1)

Laterality, n (%)

0.480

 Left

182 (45.6)

667 (47.8)

 Right

217 (54.4)

729 (52.2)

Lesion size, median (range, cm)

3.9 (0.9–19.3)

3.5 (0.9–13.9)

 < 0.001

CT reported results

 < 0.001

 Malignant

102 (25.6)

1146 (82.1)

 Equivocal

47 (11.8)

211 (15.1)

 Benign

250 (62.7)

39 (2.8)

Lesion subtype, n (%)

-

 Clear cell RCC

-

1191 (85.3)

 Papillary RCC

-

51 (3.7)

 Chromophobe RCC

-

78 (5.6)

 MiT Family translocation carcinomas

-

32 (2.3)

 Other malignant renal tumor

-

16 (1.1)

 Unclassified RCC

-

28 (2.0)

 Angiomyolipoma

307 (76.9)

-

 Oncocytoma

18 (4.5)

-

 Cyst

55 (13.8)

-

 Other benign renal tumor

19 (4.8)

-