Axial T2 and coronal T1 weighted images demonstrate a fluid signal intensity mass
in the left posterior fossa with mass effect upon the adjacent cerebellar hemisphere.
The fluid follows CSF signal intensity on both sequences.
The left posterior fossa fluid collection has decreased signal intensity on the diffusion image,
top right. It again follows CSF fluid signal intensity on the two axial FLAIR images.
Key words: mri tumor neoplasia