Presentation
Chronic headaches with no visual disturbances. Prolactin level at 100 ng/mL. To rule out adenoma.
Patient Data
Age: 40 years
Gender: Female
From the case:
Rathke cleft cyst with fluid-fluid level
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There is a well-defined midline cyst (10 x 8 x 6 mm) within the sella with fluid-fluid level seen on sagittal T1 and axial FLAIR. A thin peripheral enhancing rim of surrounding compressed pituitary tissue is noted.
From the case:
Rathke cleft cyst with fluid-fluid level
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Annoted image showing the fluid-fluid level within the cyst.
Case Discussion
A fluid-fluid level may be seen in Rathke cysts, particularly if there has been a haemorrhage. Also, It can be a feature of proteinaceous concretions within the cyst fluid. The main differential diagnosis is a haemorrhagic pituitary adenoma.
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