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A 19-year-old man presented with a nonenhancing intrasellar lesion with a midline location (A) and internal septation (B [arrow] and C [arrowhead]) on coronal contrast-enhanced T1-weighted imaging (A and B) and coronal T2-weighted imaging (C). There was no visible fluid-fluid level or intracystic nodule, so this lesion was classified as a cystic pituitary adenoma based of the diagnostic tree model; however, it was finally diagnosed as a Rathke cleft cyst.
