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The authors report a case of intramedullary ependymal cyst at the level of conus medullares in 44-year-old man. The patient was admitted to our hospital due to progressing both lower extremities weakness and radiating pain for 6months. Magnetic resonance(MR) imaging showed intramedullary cystic mass at the level of conus which compressed spinal cord. The patient underwent partial removal and made cyst to communicate with subarachnoid space. The histologic finding was ependymal cell cyst. After surgery the patient had symptomatic improvement and in follow-up MR image cyst regressed in size. Key words:Ependymal cyst;Conus medullares.