Short answer · Medically reviewed summary · Last updated: 2026-04-06
The most widely accepted medical term for this condition is Tarlov cyst, though it is frequently referred to in clinical literature as a perineural cyst or sacral nerve root cyst. Common Synonyms and Terminology Because these fluid-filled sacs can develop along the spinal canal, they are often identified by their anatomical location. Common synonyms you may encounter in your medical records include: Perineural cysts: Often used interchangeably, though technically, not all perineural cysts are symptomatic Tarlov cysts. Sacral nerve root cysts: Reflects the most common location of these lesions. Spinal meningeal cysts (Type II): A classification term used in more technical neurosurgical literature to distinguish them from other types of spinal cysts. Lumbar, thoracic, or cervical nerve root cysts: These terms specify the exact level of the spine affected by the Tarlov cyst. Classification and Historical Context The condition was first described by Dr.
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The most widely accepted medical term for this condition is Tarlov cyst, though it is frequently referred to in clinical literature as a perineural cyst or sacral nerve root cyst.
Because these fluid-filled sacs can develop along the spinal canal, they are often identified by their anatomical location. Common synonyms you may encounter in your medical records include:
The condition was first described by Dr. Isadore Tarlov in 1938, which is why the eponym "Tarlov cyst" remains the standard in modern medicine. In major classification systems, you will find them referenced under Orphanet (ORPHA: 61126) and the NIH Genetic and Rare Diseases Information Center (GARD). The reason for the variety of names stems from the historical evolution of spinal imaging; as MRI technology improved, clinicians began identifying these cysts in various segments of the spine, leading to the adoption of location-specific nomenclature.
Medical professionals currently prefer the term Tarlov cyst because it specifically denotes a cyst occurring at the junction of the dorsal root ganglion and the posterior nerve root, which is clinically significant for neurosurgical intervention. When reviewing your records, you may also see them listed as "symptomatic spinal cysts." Understanding these variations is crucial when searching for research on Tarlov cyst management or when communicating with specialists outside of neurosurgery, as some physicians may use the broader term "perineural cyst" to describe the structural appearance rather than the clinical diagnosis.
Disclaimer: This information is for educational purposes and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.