Rathke's cleft cyst.
Rathke's cleft cysts are benign sellar and suprasellar lesions arising from epithelial remnants of Rathke's pouch with a peak incidence at 30-50 years of age. The majority are between 10 and 20mm in diameter and contain mucoid or gelatinous material encapsulated in a thin cyst wall of simple or pseudostratified cuboidal or columnar epithelium. Symptomatic cases are rare, but incidental lesions are found in 11% of unselected postmortem cases. The pathogenesis of these lesions is uncertain, but...Expand abstract
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