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Epstein-Barr virus (EBV)- related primary central nervous system (CNS) diffuse large B cell lymphoma (DLBCL) is very rare in young patients without immunodeficiency.  The predominant brain superficial location of EBV-related primary CNS DLBCL, and its’ concurrence with EBV-related lumbar-sacral radiculitis are special and have not been described previously.   A young female patient presented with multiple cranial neuropathies, radiculopathy of lower limbs, and urinary retention. Her series brain magnetic resonance imaging (MRI) revealed dynamic changes, starting from lesions mainly in cranial nerves to mammillary body, pineal body, meninges, and finally in the bilateral cerebellum and cerebral lobes. Lumber spinal MRI showed enhancement in meninges and cauda equine roots. 18-uorodeoxyglucose PET-CT revealed remarkably increased glucose metabolism in the lesions shown on the aforementioned brain MRI and lumbar spinal MRI, as well as right axillary lymph nodes. The biopsy of a whole axillary node on right side indicated EBV-related lymphoproliferation. Lumbar meninges and cauda nerves biopsy revealed chronic inflammation. By cerebral spinal fluid cytology and  in situ  hybridization, EBV-encoded small RNA (EBER) positive large B cell lymphoma was identified. The patient also had primary Sjögren’s syndrome (PSS).   The patient died two weeks after treatment with rituximab, lenalidomide and methylprednisolone. She had survived for four and a half months since symptom onset. The patient presented with several stages of EBV-related complications in the nervous system, chronic EBV infection of lumbar-sacral radiculitis, and primary CNS DLBCL, indicating the process from chronic EBV infection to DLBCL in nervous system. Intracranial acute bacterium infection probably exacerbated the progression of CNS DLBCL. The concomitant sufferings of PSS reflected immune-dysfunction might have increased the risk of EBV-related CNS DLBCL in this young patient.

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Case Report: Predominant brain superficial location of Epstein-Barr virus-related primary central nervous system diffuse large B cell lymphoma in a young woman with primary Sjögren’s syndrome