Rathke cleft cyst

Case contributed by Dr Sean Finnegan

Presentation

Headache with vomiting.

Patient Data

Age: 20 years
Gender: Female
CT

CT Brain

Hyperdense lesion within the pituitary gland. No suprasellar extension or remodeling of the pituitary fossa. 

MRI

MRI Brain with contrast

Lesion identified right of the midline within the pituitary fossa measuring 10 mm. This is intermediate to high signal on T1 with no contrast enhancement. On sagittal imaging and intracystic high T1 signal "dot" is seen. No suprasellar extension to the optic chiasma.

Case Discussion

This case most likely represents a Rathke cleft cyst. The main differential is that of a small hemorrhagic adenoma, although the presence of an intracystic high T1 signal 'dot' argues strongly in favor of a Rathke's cleft cyst. Follow-up imaging will confirm the diagnosis. 

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Case information

rID: 76190
Published: 16th Apr 2020
Last edited: 19th Apr 2020
Inclusion in quiz mode: Included

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