Table 2 Comparison of clinical data and CT variables for ccRCC and other histological diagnoses in small solid renal masses

Age,years, median (IQR)

58 (50, 65)

56 (49.5, 62)

0.249^a

Sex, N (%)

0.026^b

 Female

90 (27.2%)

44 (13.3%)

 Male

154 (46.5%)

43 (13%)

Major axis / Minor axis, median (IQR)

1.13 (1.07, 1.2245)

1.20 (1.12, 1.38)

 < 0.001^a

Tumor-renal interface,mm, median (IQR)

42.9 (30.7, 52.5)

36.0 (20.9, 49.0)

0.001^a

Heterogeneity score, n (%)

 < 0.001^b

 1

2 (0.6%)

18 (5.4%)

 2

27 (8.2%)

37 (11.2%)

 3

47 (14.2%)

19 (5.7%)

 4

96 (29%)

12 (3.6%)

 5

72 (21.8%)

1 (0.3%)

Standardized heterogeneity ratio (SHR), median (IQR)

3.2 (2.3, 4.2)

1.5 (1.2, 2.2)

 < 0.001^a

Mass-to-cortex corticomedullary attenuation ratio, median (IQR)

1.10 (0.93, 1.27)

0.63 (0.44, 0.82)

 < 0.001^a

Standardized nephrographic reduction rate, median (IQR)

0.29 (0.13, 0.45)

0.02 (−0.08, 0.12)

 < 0.001^a