Central Nervous System Lymphoma: The Great Mimicker—A Single-Institution Retrospective Study

Figure 1

Masslike T2/FLAIR hyperintense enhancing lesion centered in the right brachium pontis extending into the dorsal pons and medulla with extension to the right trigeminal nerve root entry zone with additional multiple nonenhancing white matter lesions in the supratentorial and infratentorial brain. Radiographic differential diagnosis: tumefactive demyelination, primary CNS neoplasm, and leptomeningeal enhancement.

(a) MRI brain T1 postcontrast

(b) MRI brain T2/FLAIR sequence