Fig. 4
From: Melanoma arising in a Giant congenital melanocytic nevus: two case reports
Magnetic resonance imaging shows the presence of melanin in the structure of the brain. a Postcontrast axial T1-weighted (W) MRI and (b) postcontrast sagittal T1W image with focus on the altered MR signal in the left hemisphere of the cerebellum is determined. c Sagittal T1W image with focus on the abnormal MR signal on the cerebral pia mater of the cerebellum. The imaging findings described were diagnostic for neurocutaneous melanosis