Case contributed by Dr Hani Salam

Patient Data

Age: 20 years
Gender: Male
Race: Caucasian

A heterogenous, slightly hypersense mass lesion is seen in the floor of the fourth ventricle, resulting in moderate obstructive hydreocephalus. The lesion is extending through the foramen of Magendie and Luschka. 


There is a large heterogenous mass lesion in the floor of the 4th ventricle, predominantly iso-low T1, high on T2, with heterogenous but vivid enhancement. The lesion appears to extend through the foramen of Luschka (both sides) and Magendie. There is upstream obstructive moderate hydrocephalus due to the mass, with mild transependymal speak of CSF. 

Interpretation: Features are highly likely representing forth ventricular ependymoma. DDx: choroid plexus papilloma, atypical meningioma, and subependyoma. All though very unlikely. 

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Case information

rID: 15699
Published: 1st Nov 2011
Last edited: 13th Aug 2019
Inclusion in quiz mode: Included

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