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Table 3 Air cyst as epidural gas with a thin wall

From: Gas accumulation in the spinal canal: a systematic review and a novel CT-based classification

Patients

Age/

Gender

Presentation

Vacuum sign

Level

Position

MRI

Treatment

Intraoperative adhesion

Postoperatively

Outcome

8

68/F

LLRP

YES

L4-L5

Facet joint

T2 Low signal, surrounded by high signal

Surgery

Adhesion

Fibrous tissue、bone and cartilage

relief

14

51/M

BLRP

YES

L4-L5

Facet joint

T2 Low signal, Enhanced mri enhancement of the wall cyst

N/A

N/A

N/A

N/A

28

73/M

LLRP/N

YES

L5-S1

Extreme lateral

T1 Low signal

interventional

Adhesion

N/A

relief

42

66/F

SFD

YES

C7-T1

Epidural

T2 Low signal, mixed high signal

Surgery

Adhesion

Fibrous tissue

relief

45

70/F

LLRP

YES

L4-L5

Facet joint

T1/T2 Low signal

Surgery

N/A

N/A

relief

48

61/M

RLRP

YES

L5-S1

Epidural

N/A

Interventional + interventional

Adhesion

N/A

relief

53

64/F

LBP + LLRP

YES

L2-L3

Epidural

N/A

Surgery

Adhesion

N/A

relief

  1. Abbreviations: F = female, M = male, LBP = low back pain, LLRP = left limb radiating pain, RLRP = right limb radiating pain, BLRP = bilateral limb radiating pain Bilateral, LLRM = left limb radioactive numbness, RLRM = right limb radioactive numbness, SFD = Sudden droop foot, N/A = not available