IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Colloid cyst of the third ventricle

Case contributed by Sajoscha A. Sorrentino
Diagnosis certain

Presentation

Intermittent headaches.

Patient Data

Age: 75 years
Gender: Male

Well defined, rounded, hyperdense lesion (~75 HU) at the roof of the 3rd ventricle - the typical appearance of a colloid cyst.

Case Discussion

Colloid cysts account for 0.5-3% of primary brain tumors and 15-20% of intraventricular masses 1-3. They are located at the foramen of Monro in 99% of cases 1.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.