One study, using magnetic resonance imaging (MRI), reported a lack of normal sylvian fissure asymmetry in four individuals with PWS. 10 A previous qualitative study from our group identified ...

Arachnoid Cyst of the Posterior Cranial Fossa: (Left) T1-weighted axial MRI; (Right) T2-weighted axial MRI. Note the large cystic lesion in the posterior fossa. As the ... The most common locations ...