Labels:bulletin board | daily | fence | newspaper | poster | sea | sky OCR: 181 cisten,Arachnoid cysts arise ir the adjaceni parasel lar regions Remnant ithelial Rathke's pouch may prod luce midline e sts may cysts terned Rathke cleft cysts, These optic produce hydrocephalus compress the lesions chiasm pituitar or infundibu um The ignal may be difficult to identify because their intensities in MR imaging or density cysts identical to CSF (Fig. 24.20 Rathke' cle however may be hyperintense to CSF T1-weighted MR images The diagnosis noting arachnoid cysts is made radiologically ET nor base displacerment of the pituitary stalk chias of the brain. imaging Fig 24.20 Sellar cyst magnetic resonance acystic l-weighted coronal MR image showin of the sellar suprasellar mass unc displacermer opticchiasm Absence of an identifiable 81 infund ibulum differentiates this rriass e ...
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