FIG 10. Rhombencephalosynapsis in a 6-year-old boy.

A, Sagittal spin-echo (550/15) image shows abnormal cerebellar vermis.

B, Axial spin-echo (2500/80) image shows continuity of the cerebral hemispheres across the midline without a midline cerebellar vermis. The cerebral hemispheres are abnormal, with reduced white matter and inward folding of the cortex as a result of ventriculoperitoneal shunting.