Characteristics | Description | AML(n = 22) | RCC(n = 150) | x2 / t | P-value |
---|---|---|---|---|---|
Size | mean ± SD (mm) | 34.7 ± 22.2 | 40.4 ± 22.1 | 1.136 | 0.258a |
Shape | Round/Oval | 20(90.9) | 121(80.7) | 0.757 | 0.384c |
Irregular | 2(9.1) | 29(19.3) | |||
Margins | Well defined | 21(95.5) | 114(76.0) | 3.226 | 0.072c |
Poorly defined | 1(4.5) | 36(24.0) | |||
Orientation | Outward from the renal capsule | 18(81.8) | 101(67.3) | 1.888 | 0.169b |
Inward at the renal parenchyma | 4(18.2) | 49(32.7) | |||
Echogenicity | Hyper-echoic | 17(77.3) | 23(15.3) | 33.153 | 0.000b |
Iso-echoic | 1(4.5) | 28(18.7) | |||
Hypo-echoic | 4(18.2) | 99(66.0) | |||
Homogeneity | Homogeneous | 17(77.3) | 97(64.7) | 1.364 | 0.243b |
Heterogeneous | 5(22.7) | 53(35.3) | |||
Blood flow signals in CDFI | Abundant inside | 1(4.5) | 25(16.7) | 25.451 | 0.000d |
Inside and perilesional | 0(0) | 37(24.7) | |||
Perilesional | 0(0) | 29(19.3) | |||
Slight inside | 5(22.7) | 10(6.7) | |||
Without | 16(72.7) | 49(32.7) |