. Author manuscript; available in PMC: 2016 Aug 1.

Published in final edited form as: AJNR Am J Neuroradiol. 2015 Sep 24;37(2):373–379. doi: 10.3174/ajnr.A4517

Table 1.

Imaging Findings

Findings		Number of Patients
Position/Number of Root Nerves Involved	Unilateral – Single Root	113
	Bilateral – Single Root	78
	Bilateral – 2 or more Roots	22
Nerve-Root Localization	L4	1
	L5	1
	S1	16
	S2	142
	S3	120
	S4 – S5	9
Aspirated Cyst Size	1 – 2
	2 – 3	111
	3 – 4	32
	> 4	8