"Unlike other CNS lymphomas that are of large B-cell lineage, primary dural lymphomas are related to mucosa-associated lymphoid tissue (MALT), and as a result, have an indolent course and far better prognosis. On imaging, they are difficult to diagnose pre-operatively as primary dural lymphomas share many similarities with meningiomas which are vastly more frequent."
"MALT lymphomas of the dura are most often encountered in middle-aged individuals, substantially more commonly in females (M:F 1:5-7) 3. They account for < 1% of all CNS lymphoma 1,2."
"T1: isointense to grey matter"
"DWI/ADC: restricted diffusion"
"MALT lymphomas of the dura (also known as extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue of the dura), are an uncommon form of CNS lymphoma, accounting for an even smaller proportion of dural masses. They are, however, the most common form of primary dural lymphoma, in the vast majority of cases involving cranial dura; spinal involvement is rare 3."