Table 2. Results of Subgroup Analysis on Benign Cysts according to Presence of Pseudoenhancement.

CT Findings	Pseudoenhancement (+)* (42%, n = 19)	Pseudoenhancement (-) (58%, n = 26)	P
Pre-contrast CT attenuation (HU)	22.1 ± 18.5	38.2 ± 15.0	0.003
Post-contrast CT attenuation (HU)	54.6 ± 25.4	36.4 ± 15.9	0.005
Absolute enhancement (HU)	32.5 ± 18.0	-1.7 ± 8.7	< 0.001
Long-axis diameter (cm)	2.0 ± 0.8	2.1 ± 0.8	0.724
Presence of protrusion (%)	16 (n = 3)	4 (n = 1)	0.295

^*Pseudoenhancement was considered as positive for lesions with absolute enhancement ≥ 10 HU. Lt. = left, Rt. = right