Table 2.

Performance of readers for the identification of sinus fat, perinephric fat or renal vein invasion by renal cell carcinoma on contrast-enhanced CT scans

Reader	Invasive feature	Sensitivity	Specificity
Reader 1	Sinus fat invasion	71 (58–84)	79 (67–88)
	Perinephric fat invasion	83 (62–95)	76 (66–84)
	Venous invasion	59 (39–77)	93 (84–98)
Reader 2	Sinus fat invasion	88 (76–96)	71 (38–63)
	Perinephric fat invasion	68 (36–77)	72 (62–84)
	Venous invasion	69 (48-85)	91 (83–96)

Figures are given as percentage (with 95% confidence interval).