Colloid cyst
Presentation
Headache
Patient Data
Age: 20 years
Gender: Male
From the case:
Colloid cyst
CT
Axial non-contrast
A well defined hyperdense rounded lesion seen at located in the interventricular foramina of Monro. No hydrocephalus. No other abnormality.
From the case:
Colloid cyst
MRI
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FLAIR
A well defined cystic lesion seen at the foramen of Monro showing hyperintense signal in FLAIR and T2 WIs
Case Discussion
This CT and MRI demonstrate typical characteristics of a third ventricular colloid cyst. appearing as hyperdense nodule at the foramen of Monro in the roof of the third ventricle, on MRI signal characteristics are much more variable, depending on the composition of the cyst fluid.
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