“…7,8,9,12 The differential diagnosis of PCNSL includes glioma, metastasis, pseudo tumoural multiple sclerosis, brain abscess, subacute infarct, neurosarcoidosis, langerhans histocytosis, CNS infection (cytomegalovirus, toxoplasmosis, etc.). 8,9,10,11 CT and MRI imaging studies due to its hypercellularity, high nuclear/cytoplasmic ratio.…”