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Patterns of nodule enhancement at early and delayed enhancement computed tomography.
| Number of lesions | |||
|---|---|---|---|
| Pattern of enhancement | Clear cell renal cell carcinoma (n=49) | Renal angiomyolipoma (n=34) | P-valuea |
| Type A: wash-in <70 HU and any washout | 9 | 14 | 0.022 |
| Type B: persistent enhancement (no washout) | 1 | 12 | <0.001 |
| Type C: wash-in ≥70 HU and washout >50 HU | 20 | 2 | <0.001 |
| Type D: wash-in ≥70 HU and washout ≤50 HU | 19 | 6 | 0.039 |
HU, Hounsfield units.
χ2 test.
