# Primary Dural Diffuse Large B-Cell Lymphoma: A Case Report

## TL;DR

A rare case of primary dural diffuse large B-cell lymphoma in a 78-year-old woman is reported, diagnosed after imaging and surgery.

## Contribution

This case report presents a rare instance of primary dural lymphoma classified as diffuse large B-cell lymphoma rather than the typical mucosa-associated lymphoid tissue type.

## Key findings

- The patient presented with status epilepticus and an extra-axial mass lesion on MRI.
- Histopathological and immunohistochemical analysis confirmed diffuse large B-cell lymphoma.
- The case highlights the unusual clinical and pathological features of primary dural lymphoma.

## Abstract

Primary dural lymphoma is a rare subtype of primary central nervous system lymphoma that arises from the dura mater. The majority of primary dural lymphomas are histologically mucosa-associated lymphoid tissue lymphoma. We present a rare case of a 78-year-old woman with primary dural lymphoma diagnosed as diffuse large B-cell lymphoma. She was admitted with status epilepticus. Magnetic resonance imaging showed an extra-axial mass lesion in the right parieto-occipital region, which enhanced homogeneously with contrast medium. To obtain a histopathological diagnosis, resection of the lesion involving the dura mater was performed. Based on histopathological and immunohistochemical examinations, the patient was diagnosed with diffuse large B-cell lymphoma. We summarize the clinical characteristics of this unusual disease.