PubMed · 14809264
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G WEBER. 1950-12-23. [Subdural empyema].. https://pubmed.ncbi.nlm.nih.gov/14809264/
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Primary high-grade lymphoma of the dura mater and cranial vault has rarely been reported. The authors treated a 61-year-old man who presented with a slow-growing scalp mass that involved the cranial vertex. Magnetic resonance imaging revealed an oval mass of the dural type with peripheral edema in the bilateral parietal region, with attachment to the cranial vault and extension to the subgaleal space. After subtotal resection, pathological examination yielded a diagnosis of malignant large B-cell lymphoma. Twenty-three months postoperatively, after undergoing radiation therapy and chemotherapy, the patient is neurologically intact and without systemic dissemination of the malignancy. This is a case of primary malignant B-cell lymphoma of the dura mater with extensive involvement of the skull, which is a very rare event. Imaging-based diagnosis and combined therapy consisting of surgery, radiation therapy, and chemotherapy for the disease are discussed, and the literature on extraaxial malignant lymphomas is extensively reviewed.
Primary dural lymphoma (PDL) is a rare subtype of primary central nervous system lymphoma (PCNSL) that arises from the dura mater and differs biologically from other CNS lymphomas. The PDL is usually a low-grade marginal zone lymphoma (MZL), whereas other types of PCNSLs are usually high-grade, diffuse, large B-cell lymphomas. A PDL usually presents with single or multiple extraaxial masses that enhance diffusely with addition of contrast material and can be confused with meningioma. The MZLs respond well to local therapy such as surgery and radiation treatment. Most patients attain complete response and have good local disease control. Nevertheless, the risk of systemic relapse appears to be high, probably because the dura mater is outside of the blood-brain barrier.
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