Figure 1.

Serial MR images of gliomatosis cerebri. Case 2: (A & B) at the initial presentation, highly infiltrated lesion is found on the FLAIR image, but there is no enhancing lesion on the T1 weighted enhanced image (T1WI), (C & D) After 3 months, the tumor is widely spread on the FLAIR images and new contrast-enhancing lesions diffusely appears on the T1WI.

Kong et al. BMC Cancer 2010 10:424   doi:10.1186/1471-2407-10-424
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