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Suprasellar epithelial cyst. Case report.

This case report describes an epithelial cyst lying above the diaphragma sellae and causing hypopituitarism and chiasmal compression in a 17-year-old girl. The epithelial lining of the cyst showed similarities with enteric epithelium rather than with "classic" Rathke's cleft. The problem of the true origin of Rathke's cleft, and of cysts so labeled, and the possible role played by neuroepithelium are discussed briefly.