[Primary Central Nervous System Lymphoma: Essentials of Imaging Findings].

Primary central nervous system lymphoma (PCNSL) consists of 1%-5% of brain tumors, and the lesions can be identified using conventional techniques such as CT and MRI. However, differential diagnosis is still challenging when the lesions show atypical findings similar to other diseases such as glioma, infectious diseases (progressive multifocal leukoencephalopathy, toxoplasmosis), and demyelinating diseases (multiple sclerosis). In this review, we have presented imaging findings of conventional and advanced neuroimaging techniques to help differentiate PCNSL from other diseases and detect further characteristics such as prognostic factors, treatment effects, and gene mutations.