Presentation
Headache.
Patient Data
Age: 20 years
Gender: Male
From the case:
Colloid cyst of the third ventricle
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farghali tosson","case_id":57726,"case_key_image_id":35097030,"case_featured_at":null},"current_user":null,"access":{"can_edit":false,"can_download":true,"can_feature":false,"can_pin":true}}
A well-defined hyperdense rounded lesion is seen at located in the interventricular foramina of Monro. No hydrocephalus. No other abnormality.
From the case:
Colloid cyst of the third ventricle
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A well-defined cystic lesion is 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 a hyperdense nodule at the foramen of Monro in the roof of the third ventricle. MRI signal characteristics are much more variable, depending on the composition of the cyst fluid.
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