Primary dural diffuse large B cell lymphoma mimicking parafalcine meningioma.

A 58-year-old immunocompetent woman presented with complaints of recent onset recurrent generalised tonic-clonic seizures and left hemiparesis. On MRI a dural-based heterogeneously enhancing mass was seen along the falx cerebri mimicking parafalcine meningioma, causing brain parenchymal compression and vasogenic oedema in the right frontal and parietal lobes. The tumour was completely excised and on subsequent investigation it was diagnosed as diffuse large B cell type primary dural lymphoma. Chemotherapy with CHOP (cyclophosphamide, hydroxyl doxorubicin, vincristine and prednisone) regimen was started; however, the patient later died from episodes of acute pulmonary thromboembolism, aspiration pneumonia and septic shock. © BMJ Publishing Group Ltd (unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.