Table 3.

Presentation and outcomes of patients based on management. Data are presented as n (%) or as median (range).

Variable	Management		P-value
	Conservative	Surgical
n	46	46
Age at diagnosis, years	50.8 (19–83)	36.9 (14–60)	0.0009
Women	24 (52%)	28 (61%)	0.5284
Symptoms of mass effect	2 (4%)	7 (15%)	0.1577
Initial cyst size, mm	45 (12–99)	50.5 (5–200)	0.3753
Unenhanced CT attenuation, HU	18 (0–83)	19 (0–70)	0.2892
Cyst growth rate#, mm per year	+0.4 (−9 to 13)	+5.5 (−8 to 27)	0.0002
Change in cyst size#,$, mm	+2.3 (−60 to 73)	+26 (−30 to 111)	0.0004

Abbreviations used: CT = computed tomography; HU = Hounsfield units

P value < 0.05 is significant

^#Available for 59 patients with more than 6 months of imaging follow-up

^$Difference between cyst size on last and the first imaging studies