Eosinophilic granulomatosis with polyangiitis (EGPA) on remission with a new neuropathy: a rare case of mycophenolate induced primary CNS lymphoproliferative disease.

Journal of Community Hospital Internal Medicine Perspectives
Pragya ShresthaShoja Rahimian

Abstract

Introduction Mycophenolate Mofetil (MMF), although a widely used immunosuppressant; an increasing concern of MMF induced Primary Central Nervous System Lymphoma (PCNSL) are being reported. Timely diagnosis and management of MMF induced PCNSL can play a vital role in improved outcomes. Case Presentation Eighty-one-year-old female with history of Eosinophilic Granulomatosis with Polyangiitis (EGPA) presented with word finding difficulty, right-hand weakness and right foot clumsiness. EGPA had been stable with MMF for 6 years. Physical examination revealed weakened right-hand grip, positive right-sided dysdiadokokinesia and right foot drop. MRI-brain identified three enhancing solid lesions - in right parietal, left insular and left mid brain extending into the left thalamus. Brain biopsy revealed a focally dense lymphoid infiltrate with CD20 positive B cells, with large atypical cells resembling Hodgkin Reed-Sternberg cells. With concern for immunosuppression related PCNSL, MMF was stopped. Patient was treated with 8 weeks of rituximab therapy for its least toxic profile and concomitant benefit in EGPA. On a 2 month follow up MRI-brain, near total resolution of the intracranial lesion was observed. Patient still had some residual...Continue Reading

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