Intraneural ganglion cyst of the lumbosacral plexus mimicking L5 radiculopathy: A case report

Table 1 Summary of previously published articles of intraneural ganglion cysts of the proximal sciatic nerve or lumbosacral plexus [in the order of publication (recent to oldest)]

No.	Ref.	Male/age	Clinical presentations or exam	Electrodiagnosis	MRI findings			Treatments	Outcomes	Follow-up MRI (interval from treatment)
					Shape	Intra-articular communication	Intrapelvic extension
1	Kim et al[12], 2019	M/46	Radicular pain. Ankle dorsiflexor 0, big toe extensor 0	Plexopathy	Serpentile channel-like expansion and fusiform cyst expansion	Yes	Yes	Arthroscopic debridement and caspsulotomy	Pain–partial relief. Motor–partial improvement	No evidence of recurrence (18 mo)
2	Panwar et al[13], 2017	NA/NA	NA	NA	Balloon-like cyst expansion	Yes	Yes	NA	NA	NA
3	Briem et al[6], 2016	M/48	Radicular pain. No weakness	Normal	Pearl-necklace-like form	Yes	Yes	Posterolateral approach	Pain–partial relief	No evidence of recurrence (12 mo)
4	Spinner et al[3], 2009	M/23	Peroneal dysfunction	NC	Balloon-like cyst expansion	Yes	Yes	Posterior transgluteal exploration and cyst evacuation	Pain-complete relief. Motor–partial improvement	Recurrent intraneural cyst within the articular branch (2 mo)
5	Spinner et al[3], 2009	M/33	Peorneal (dominant) and tibial dysfunction	Peroneal neuropathy at knee	Balloon-like cyst expansion	Yes	Yes	Anterior transabdominal approach	Pain-Partial relief. Motor–partial improvement	NC
6	Spinner et al[3], 2009	M/53	Normal exam	Normal	Pearl-necklace-like form & fusiform swelling	Yes	Yes	Offset procedure and labral repair, no decompression of intraneural cyst	Pain-Partial relief. Motor–partial improvement	No evidence of recurrence (2 yr)
7	Spinner et al[3], 2009	F/55	Peorneal (dominant) and tibial dysfunction	NC	Balloon-like cyst expansion	Yes	Questionable	Posterior transgluteal exploration and cyst evacuation	Pain-Partial relief. Motor–partial improvement	NC
8	Swartz et al[7], 2009	F/37	Radicular pain. Hip extension weakness	Plexopathy	Pearl-necklace-like form	Yes	Yes	Explorative decompression of perineural cyst	Pain–partial relief. Motor–partial improvement	No evidence of recurrence, but residual cyst (4 mo)
9	1Sugita et al[17], 1997	NA/NA	NA	NA	Fusiform cyst expansion to superior gluteal nerve	Yes	Yes	Subtotal cyst resection	Pain–partial relief. Motor–partial improvement	NA
10	Our case	F/65	Radicular pain. No weakness	Normal	Balloon-like cyst expansion	Yes	Yes	Arthroscopic debridement and cyst decompression	Pain–partial relief	NA

¹Data of this case was retrieved from reference 4.

MRI: Magnetic resonance imaging; NA: Not available; NC: Not checked.