Colloid cyst of the third ventricle
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A rounded hyperdense lesion located near the interventricular foramina of Monro is present, without hydrocephalus.
Colloid cyst of the 3rd ventricle typically seen as a well defined, unilocular rounded lesion at the roof of the 3rd ventricle. They are typically hyperdense and calcification is uncommon.
- Waggenspack GA, Guinto FC. MR and CT of masses of the anterosuperior third ventricle. AJR Am J Roentgenol. 1989;152 (3): 609-14. AJR Am J Roentgenol (abstract) - Pubmed citation