Figure 1From: Extensive central nervous system involvement in Merkel cell carcinoma: a case report and review of the literature Axial magnetic resonance imaging (MRI) scan at three different occasions. Images (A-C) show the initial MRI with a large right-sided supratentorial meningeal tumor (arrows) with extensive surrounding edema (bright signal, C). D) MRI after treatment with gamma knife shows marked reduction of the tumor size with only little residual tumor (arrow). E-F) MRI six months from the start of symptoms shows leptomeningeal metastases with linear contrast enhancement along the cerebellar sulci (arrows).Back to article page