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[0] Enterogenous cyst [1] Rare [2] Probably due to maldevelopment. [3] Spinal cord, most common in the cervical and upper thoracic segment. Less common in other spinal levels. Rarely seen as intracranial cyst. [4] Clinical manifestation is related to compression and disruption of spinal cord function. [6] The cyst wall is composed of connective tissue. The lining epithelium varies from low to high columnar cells that may have pseudostratification. Mucous secreting cells can be found. Occasionally, they are ciliated. [5] 
Most of them are intra- or subdural, occasionally intramedullary.
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