Features | Xp11.2/TFE3 RCC (n = 18) | ccRCC (n = 60) | pRCC (n = 32) | P value | |
---|---|---|---|---|---|
Xp11.2/TFE3 RCC vs ccRCC | Xp11.2/TFE3 RCC vs pRCC | ||||
Echogenicity (%) | Â | Â | Â | 0.605 | 0.176 |
 Hypoechoic | 6 (33.3) | 28 (46.7) | 17 (53.1) |  |  |
 Isoechoic | 8 (44.4) | 21 (35.0) | 13 (40.6) |  |  |
 Hyperechoic | 4 (22.2) | 11 (18.3) | 2 (6.3) |  |  |
Cystic component(%) | Â | Â | Â | 0.413 | 0.830 |
 Present | 5 (27.8) | 23 (38.3) | 8 (25.0) |  |  |
 Absent | 13 (72.2) | 37 (61.7) | 24 (75.0) |  |  |
Calcification (%) |  |  |  | < 0.001* | 0.009* |
 Present | 9 (50.0) | 4 (6.7) | 5 (15.6) |  |  |
 Absent | 9 (50.0) | 56 (93.3) | 27 (84.4) |  |  |
Color flow signal (%) | Â | Â | Â | 0.087 | 0.198 |
 Present | 7 (38.9) | 37 (61.7) | 7 (21.9) |  |  |
 Absent | 11 (61.1) | 23 (38.3) | 25 (78.1) |  |  |
Wash-in(%) | Â | Â | Â | 0.001* | 0.022* |
 Slow-in | 7 (38.9) | 3 (5.0) | 23 (71.9) |  |  |
 Simultaneous-in | 11 (61.1) | 57 (95.0) | 9 (28.1) |  |  |
Peak Enhancement (%) |  |  |  | < 0.001* | 0.004* |
 Hypoenhancement | 6 (33.3) | 3 (5.0) | 24 (75.0) |  |  |
 Isoenhancement | 10 (55.6) | 10 (16.7) | 4 (12.5) |  |  |
 Hyperenhancement | 2 (11.1) | 47 (78.3) | 4 (12.5) |  |  |
Homogeneity (%) | Â | Â | Â | 0.683 | 0.077 |
 Homogeneous | 6 (33.3) | 17 (28.3) | 19 (59.4) |  |  |
 Heterogeneous | 12 (66.7) | 43 (71.7) | 13 (40.6) |  |  |
Wash-out (%) | Â | Â | Â | 0.354 | 0.602 |
 Fast- or simultaneous-out | 16 (88.9) | 45 (75.0) | 31 (96.9) |  |  |
 Slow-out | 2 (11.1) | 15 (25.0) | 1 (3.1) |  |  |
Pseudocapsule (%) | Â | Â | Â | 0.449 | 0.254 |
 Present | 6 (33.3) | 26 (43.3) | 16 (50.0) |  |  |
 Absent | 12 (66.7) | 34 (56.7) | 16 (50.0) |  |  |