Fig. 1A.73-year-old woman with history of breast cancer and left
adrenal lipid-poor adenoma. Unenhanced CT scan shows left adrenal mass that
measured 29 H.
Fig. 1B.73-old-year woman with history of breast cancer and left
adrenal lipid-poor adenoma. Enhanced CT scan shows left adrenal mass that
measured 73 H.
Fig. 1C.73-old-year woman with history of breast cancer and left
adrenal lipid-poor adenoma. Delayed enhanced CT scan shows left adrenal mass
that measured 44 H. Enhancement washout = 29 H (73 H - 44 H); enhancement = 44
H (73 H - 29 H); percentage enhancement washout = 66% [(enhancement washout /
enhancement) = (29 / 44) x 100].
Fig. 2.Bar chart shows there was no significant difference in mean
attenuation values between lipid-poor adenomas (dark gray bars) and
nonadenomas (light gray bars) before or after contrast enhancement.
Mean attenuation values were significantly different between lipid-poor
adenomas and lipid-rich adenomas (white bars) for each of three
phases.
Fig. 3.Bar chart shows nearly identical enhancement, enhancement
washout, and percentage enhancement washout for lipid-rich (white
bars) and lipid-poor (dark gray bars) adenomas. Values for
nonadenomas (light gray bars) were significantly less than those for
both types of adenomas.
Fig. 4.Bar chart shows that unlike true percentage enhancement
washout, relative percentage enhancement washout of lipid-poor adenomas
(dark gray bars) was significantly lower than that of lipid-rich
adenomas (white bars), although still significantly higher than that
of nonadenomas (light gray bars).