Fig 2.

Multifocal (synchronous) SHH tumors at diagnosis. The multiple tumors on this axial postcontrast T1 are located in, and presumably originate within, the cerebellar cortex (A). In the second patient (B), there is 1 large fourth ventricular mass with an associated separate cortical mass posteriorly. In this case, the main tumor is lobulated and appears more like a conglomerate of multiple masses.