Fig 3.

Metastatic group 3 tumor. In the first patient (A and B), the leptomeningeal “sugar coating” metastases demonstrate both diffusion restriction (A) and leptomeningeal enhancement on an axial postcontrast T1 image (B). In the second patient, the primary tumor appears smaller than its leptomeningeal suprasellar, avidly enhancing metastasis (C). An avidly enhancing nodular metastasis involving the cortex in the cerebellum posteriorly is also noted.