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Perineural cyst

Case contributed by Rajarajan
Diagnosis almost certain

Presentation

Severe sciatica

Patient Data

Age: 35 years
Gender: Female

Lumbosacral spine

mri

MRI Lumbar spine shows bilateral well-defined cysts causing severe canal narrowing. Nerve root is seen traversing the cysts. 

Case Discussion

Patient presented severe sciatica. MRI revealed perineural cysts (Tarlov cysts) at S1-S2 level. Yet, the vast majority of Tarlov cysts are completely incidental and asymptomatic. 

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