Background: Intramedullary ectopic choroid plexus is rarely reported, here, we reported a rare case of symptomatic syringomyelia resulted of intramedullary ectopic choroid plexus.
Case Description: The patient was a 30-year-old female who presented with a 2-month history of progressive pain of upper back and bilateral ankle joint and progressive loss of upper-extremity function. MRI examination showed an intramedullary cystic lesion at T2-T4 without enhancement. Operative exploration was indicated. A reddish vascular villus-like lesion was found being located in the left dorsal part of the cyst, which was enblock removed and was confirmed as an ectopic choroid plexus tissue by pathological examination. The patient recovered uneventful and the symptom resolved during follow-up.
Conclusions: Although ectopic choroid plexus is extremely rare, it should be taken into acount in the differential diagnosis of pathogenesis in syringomyelia or intramedullary cyst, aggressive surgical exploration should be considered when necessary.
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