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A 2. 5 cm posterior fossa mass arising from the roof of the 4th ventricle's ascending into the cerebellar vermis was seen by magnetic resonance imaging. A rare extranodal manifestation of non-Hodgkin lymphoma emerging from the 4th ventricle is non-Hodgkin lymphoma, with few cases reported in the literature. Any immunocompetent adult presenting with a posterior fossa mass should have a variable clinical appearance, occurs most often in immunocompetent males, and should be investigated to establish the difference between any immunocompetent adult presenting with a posterior fossa mass.
Source link: https://doi.org/10.1155/2019/2671794
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