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Babici D, Sharma P, DeGregorio J, Snelling B, Hanafy K. Acute subdural hematoma due to acute myeloid leukemia and B-cell lymphoma. eNeurologicalSci 2022; 29:100425. [PMID: 36164337 PMCID: PMC9508343 DOI: 10.1016/j.ensci.2022.100425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/10/2022] [Indexed: 11/26/2022] Open
Abstract
Chloroma, is an rare malignant tumor characterized by the extramedullary blast proliferation of myeloid lineages that subsequently change the normal architecture of surrounding tissues. Because this is very rare disease, primary central nervous system myeloid sarcoma has not been widely reported. Myeloid sarcoma, as a group of heterogenetic diseases, presents with differential clinical and histological pictures depending upon the primary affected site. We are presenting a 77-year-old gentleman, with past medical history of chronic lymphoblastic leukemia that was not on any treatment and who presented with complaints of lethargy, disorientation, and weakness. CT scan of the head showed left-sided subdural hematoma with significant mass effect with left-to-right shift. Craniotomy and hematoma evacuation was performed and hematoma and subdural lesion was sent for pathological evaluation. Histologic examination of the hematoma revealed solid sheets of small-medium sized atypical hematopoietic cells that was imbedded in an acute and chronic hematoma. To confirm the final diagnosis, flow cytometry was performed and showed two neoplastic clones, consistent with acute myeloid leukemia with monocytic differentiation and a separate mature B-cell lymphoma. To our knowledge we are presenting the first case in the literature of the Intracranial acute myeloid leukemia/myeloid sarcoma and B-cell lymphoma that was found in the same brain lesion.
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Affiliation(s)
- Denis Babici
- Department of Neurology, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, FL, United States of America
| | - Pamraj Sharma
- Department of Neurology, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, FL, United States of America
| | - Jason DeGregorio
- Department of Pathology, Boca Raton Regional Hospital, United States of America
| | - Brian Snelling
- Department of Neurosurgery, Marcus Neuroscience Institute, Boca Raton, FL, United States of America
| | - Khalid Hanafy
- Department of Neurocritical care, Marcus Neuroscience Institute, Boca Raton, FL, United States of America
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2
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Case report of primary dural lymphoma mimicking a cerebellar meningioma and brief review of literature. Acta Neurol Belg 2021; 121:409-414. [PMID: 31301042 DOI: 10.1007/s13760-019-01188-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/02/2019] [Indexed: 10/26/2022]
Abstract
Primary dural lymphoma (PDL) is an extremely rare subtype of primary central nervous system lymphoma arising from the dura mater in absence of systemic disease. The most common histological type is the low-grade marginal zone lymphoma, whereas high-grade lymphomas are unusual. We present a case of primary diffuse large B-cell lymphoma, presenting as PDL in the posterior fossa, originating from the dura mater of the petrous bone covering the surface of the left cerebellum, a location not previously described. A 65-year-old woman presented with sudden onset of severe dizziness was admitted in otolaryngology department then transferred to neurosurgery ward. CT scan revealed a large lesion involving left cerebellum, subsequent MRI of the brain demonstrated an enhancing mass suggestive for petrous bone meningioma. The tumor was excised, and the histopathological examination unexpectedly revealed a diffuse large B-cell lymphoma. The patient received postoperative chemoradiotherapy. 20 months after surgery a good outcome was registered. Due to the rarity of primary dural lymphomas no standard treatment is available, however, gross total or subtotal resection followed by adjuvant therapy seems to be a good choice to manage the pathology.
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3
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Quinn ZL, Zakharia K, Schmid JL, Schmieg JJ, Safah H, Saba NS. Primary Dural Diffuse Large B-cell Lymphoma: A Comprehensive Review of Survival and Treatment Outcomes. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 20:e105-e112. [PMID: 31902733 DOI: 10.1016/j.clml.2019.09.600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/09/2019] [Accepted: 09/21/2019] [Indexed: 11/20/2022]
Abstract
Primary dural diffuse large B-cell lymphoma (PD-DLBCL) is a rare and aggressive B-cell non-Hodgkin lymphoma that can present in intracranial or intraspinal locations. Although the optimal management is unknown, PD-DLBCL therapy is often mirrored after primary central nervous system lymphoma therapy and aggressive treatment with a high dose methotrexate-based regimen is frequently used. Our comprehensive, retrospective study of 24 reported cases of PD-DLBCL provide the most complete analysis of this rare disease including data on biology, treatment outcomes, and survival. Our findings demonstrate good outcomes following induction treatment with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), suggesting that these cases can be treated as DLBCL rather than primary central nervous system lymphoma, obviating the need for more aggressive and toxic approaches. The durable responses following R-CHOP also confirm that PD-DLBCL is not protected by the blood brain barrier.
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Affiliation(s)
- Zachary L Quinn
- Deming Department of Medicine, Tulane University, New Orleans, LA
| | - Karam Zakharia
- Section of Hematology and Medical Oncology, Deming Department of Medicine, Tulane University, New Orleans, LA
| | - Janet L Schmid
- Department of Pathology, Tulane University, New Orleans, LA
| | - John J Schmieg
- Department of Pathology, Tulane University, New Orleans, LA
| | - Hana Safah
- Section of Hematology and Medical Oncology, Deming Department of Medicine, Tulane University, New Orleans, LA
| | - Nakhle S Saba
- Section of Hematology and Medical Oncology, Deming Department of Medicine, Tulane University, New Orleans, LA.
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4
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Lyndon D, Lansley JA, Evanson J, Krishnan AS. Dural masses: meningiomas and their mimics. Insights Imaging 2019; 10:11. [PMID: 30725238 PMCID: PMC6365311 DOI: 10.1186/s13244-019-0697-7] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 01/15/2019] [Indexed: 02/08/2023] Open
Abstract
Meningiomas are the most common dural tumour. They are regularly being seen as an incidental finding on brain imaging and treated conservatively. However, there are many other dural masses which mimic their appearances, including primary neoplastic processes, metastases, granulomatous diseases and infection. While some of these are rare, others such as metastases and tuberculosis arise relatively frequently in practice. Although not pathognomonic, key features which increase the probability of a lesion being a meningioma include intralesional calcifications, skull hyperostosis, local dural enhancement and increased perfusion. It is important to have an awareness of these entities as well as their main imaging findings, as they have a wide range of prognoses and differing management strategies. This review outlines several of the most important mimics along with their imaging findings on both standard and advanced techniques with key features which may be used to help differentiate them from meningiomas.
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Affiliation(s)
- Daniel Lyndon
- Department of Neuroradiology, St Bartholomew's and the Royal London Hospitals, Whitechapel, London, E1 1BB, UK.
| | - Joseph A Lansley
- Department of Neuroradiology, St Bartholomew's and the Royal London Hospitals, Whitechapel, London, E1 1BB, UK
| | - Jane Evanson
- Department of Neuroradiology, St Bartholomew's and the Royal London Hospitals, Whitechapel, London, E1 1BB, UK
| | - Anant S Krishnan
- Department of Neuroradiology, St Bartholomew's and the Royal London Hospitals, Whitechapel, London, E1 1BB, UK
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5
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Lv ZW, Cheng KL, Tian HJ, Han XM. Primary diffuse large B-cell lymphoma of the dura with skull and scalp involvement: A case report and brief review of the literature. Oncol Lett 2016; 11:3583-3588. [PMID: 27284359 PMCID: PMC4887839 DOI: 10.3892/ol.2016.4455] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 02/24/2016] [Indexed: 12/30/2022] Open
Abstract
Primary dural lymphoma (PDL) refers to a lymphoma with epidural or subdural involvement and is a rare subtype of primary central nervous system lymphoma. Diffuse large B-cell lymphoma (DLBCL) presenting as PDL is extremely rare. The present study reports a case of PDL with skull and scalp involvement in a 56-year-old man. Magnetic resonance imaging (MRI) revealed that the tumor was located under the right parietal inner plate and was attached to the dura mater. Following contrast-enhanced MRI, markedly enhanced tumor signals were observed, and mild homogeneous enhancement was observed in the diploë and soft tissues under the scalp, near the parietal bone. Under general anesthesia, the patient underwent craniotomy and tumor resection. The postoperative pathological diagnosis was DLBCL. Tumors were additionally identified inside the skull and subcutaneous tissues. The patient was administered chemotherapy postoperatively, and the prognosis subsequent to the 4-year follow-up was favorable. Primary malignant lymphoma should be considered in the differential diagnosis of scalp masses and meningeal lesions. Early diagnosis and individualized treatment is closely associated with a favorable outcome.
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Affiliation(s)
- Zhong-Wen Lv
- Department of Radiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Kai-Liang Cheng
- Department of Radiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Hong-Ji Tian
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
| | - Xue-Mei Han
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130031, P.R. China
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6
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Primary dural lymphoblastic B-cell lymphoma: a rare subtype of aggressive dural lymphoma. J Hematop 2016. [DOI: 10.1007/s12308-015-0257-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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7
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Primary Diffuse Large B-Cell Dural Lymphoma With Bone and Subcutaneous Tissue Involvement Mimicking Meningioma. J Craniofac Surg 2015. [DOI: 10.1097/scs.0000000000002007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Munakomi S, Bhattarai B, Srinivas B, Cherian I. Case Report: Primary dural based diffuse large B-Cell lymphoma in a 14 year-old boy. F1000Res 2015; 4:78. [PMID: 26167270 PMCID: PMC4482212 DOI: 10.12688/f1000research.6269.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/20/2015] [Indexed: 11/20/2022] Open
Abstract
Primary dural lymphoma is a subentity of primary leptomeningeal lymphoma which represents 0.1% of all non-Hodgkin’s lymphomas. Only five cases have been reported so far. We report a very rare case of primary dural-based lymphoma in a 14 year-old boy presenting with mass effect. The patient was managed with excision of the lesion and removal of the involved bone. Post-operatively, the patient showed good recovery. He was then referred to the oncology unit for further chemo- and radiation therapy. A high index of suspicion should therefore be kept in order to diagnose the condition in a timely fashion and then plan for appropriate management since diffuse large cell lymphoma has a relatively benign clinical prognosis.
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Affiliation(s)
- Sunil Munakomi
- International Society for Medical Education, College of Medical Sciences, Bharatpur, Chitwan, 44207, Nepal
| | - Binod Bhattarai
- International Society for Medical Education, College of Medical Sciences, Bharatpur, Chitwan, 44207, Nepal
| | - Balaji Srinivas
- International Society for Medical Education, College of Medical Sciences, Bharatpur, Chitwan, 44207, Nepal
| | - Iype Cherian
- International Society for Medical Education, College of Medical Sciences, Bharatpur, Chitwan, 44207, Nepal
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Abstract
Primary malignant B-cell-type dural lymphoma is a rare subtype of primary central nervous system lymphoma (PCNSL). We herein report an unusual case of diffuse B-cell lymphoma that presents as a chronic subdural haematoma without extracranial involvement. The notable aspects of this case include the patient's immunocompetence, a short clinical history of symptom onset, rapid neurological deterioration and a fi nal diagnosis of high-grade PCNSL. This case highlights the challenges neurosurgeons face, especially in the emergency setting, when the disease manifests in varied presentations.
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Affiliation(s)
| | - Siang Hui Lai
- Department of Pathology, Singapore General Hospital, Singapore
| | - Wai Hoe Ng
- Department of Neurosurgery, National Neuroscience Institute, Singapore
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10
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Vemuri NV, Karanam LSP, Rambabu L, Rao VSN, Kalyan K, Sateesh G. Subdural B cell lymphoma. Imaging features, histopathology. Literature review. Neuroradiol J 2013; 26:636-8. [PMID: 24355181 DOI: 10.1177/197140091302600605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 10/27/2013] [Indexed: 11/15/2022] Open
Abstract
Dural-based B cell lymphomas are rare and have a female preponderance. A 60-year-old Asian man with a history of trivial trauma presented with generalised tonic clonic seizures and headache. Imaging and clinical work-up was done. A temporoparietal subdural lesion with no evidence of systemic lymphoma was detected. Intraoperatively, a dural-based mass lesion was seen with thickened dura and biopsy-proven B cell lymphoma, and the patient was then kept on chemotherapy. A suspicion of this rare entity should be considered in imaging of dural-based lesions.
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11
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Berget E, Helgeland L, Lehmann AK, Smievoll AI, Vintermyr OK, Mørk SJ. Primary diffuse large B-cell lymphoma of the dura without systemic recurrence four years after diagnosis and successful therapy. Acta Oncol 2013; 52:1047-9. [PMID: 23072723 DOI: 10.3109/0284186x.2012.731526] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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13
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Mneimneh WS, Ashraf MA, Li L, El-Kadi O, Qian J, Nazeer T, Hayner-Buchan A. Primary dural lymphoma: a novel concept of heterogeneous disease. Pathol Int 2013; 63:68-72. [PMID: 23356228 DOI: 10.1111/pin.12025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 12/07/2012] [Indexed: 12/15/2022]
Abstract
Spinal primary dural lymphoma (PDL) is uncommon with a total of 37 previous well-documented cases reported, including one diagnosed in the authors' institution. More recently we encountered an additional case of spinal PDL that, similarly to our previous case, was grade 1-2 follicular B-cell PDL. Our two cases were diagnosed over a 3-year interval in a 72-year-old female and a 74-year-old male, respectively. An exhaustive literature review on PDL was performed consequently to reveal that: (i) spinal and cerebral sites of involvement by PDL are constantly mutually exclusive; and (ii) unlike cerebral PDL, which is usually of marginal zone B-cell type, only two of the 38 cases of spinal PDL were diagnosed as such, diffuse large B-cell lymphoma being the most commonly encountered type in the spine. This divergence infers that, in contrast to the prevailing concept that PDL is a unique disease group, PDL appears to be rather heterogeneous with a difference in predilection of lymphoma type for the anatomical site of dural involvement. Such a site-specific lymphoma-type predilection phenomenon, well-recognized in other organ systems, has not been acknowledged in PDL. This report brings new insights into PDL, and may contribute to a better understanding of nervous system pathophysiology and lymphoma classification.
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Grisold W, Briani C, Vass A. Malignant cell infiltration in the peripheral nervous system. HANDBOOK OF CLINICAL NEUROLOGY 2013; 115:685-712. [PMID: 23931810 DOI: 10.1016/b978-0-444-52902-2.00040-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The peripheral nervous system can be affected by malignancies involving different mechanisms. Neoplastic nerve lesion by compression, invasion, and infiltration is rare and occurs in particular in leukemia (neuroleukemiosis) and lymphoma (neurolymphomatosis). Its occurrence is much rarer in cancer, and even less so in sarcoma. The neoplastic infiltration of peripheral nerves by solid tumors is characterized by specific topographical sites such as the base of the skull, the ear, nose and throat region, and the cervico-brachial plexus as well as the lumbar and sacral plexus. Rarely malignant invasion affects the cranial nerves of the face where it can spread centripetally. Autonomic nerves and ganglia can also be affected. The retrograde spread of cancer in nerves is a bad prognostic sign. The clinical diagnosis is determined by tumor type, the pattern of involvement, and often pain.
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Affiliation(s)
- W Grisold
- Department of Neurology, Kaiser-Franz-Josef Hospital, Austrian Cluster for Tissue Regeneration and Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.
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15
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Abstract
Although direct neoplastic involvement of muscle tis-sue is surprisingly rare, considering the large amount of body mass that is represented by muscle tissue, the most important and unresolved muscle effect is muscle cachexia.Other associations, such as inflammatory, paraneo-plastic, toxic, and several extremely rare associations,have been described. Drug-induced toxicity and radiation recall syndrome need to be taken into consideration when muscle symptoms appear in patients with cancer.
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Matmati K, Matmati N, Hannun YA, Rumboldt Z, Patel S, Lazarchick J, Stuart R, Giglio P. Dural MALT lymphoma with disseminated disease. Hematol Rep 2010; 2:e10. [PMID: 22184513 PMCID: PMC3222263 DOI: 10.4081/hr.2010.e10] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 11/30/2010] [Accepted: 12/01/2010] [Indexed: 12/16/2022] Open
Abstract
Central nervous system (CNS) lymphoma involving the dura mater is very rare and histologically is usually a subtype of non-Hodgkin's lymphoma (NHL) termed mucosa-associated lymphoid tissue (MALT) lymphoma. We present a case of a 46-year old woman with dural MALT lymphoma that was found to also involve a lacrimal gland, inguinal lymph nodes, and bone marrow. Magnetic resonance imaging of the brain showed an extra-axial enhancing mass approximately 6 cm in maximum diameter along the right frontotemporal convexity. Histopathology of the resected dural mass showed MALT lymphoma expressing CD20, CD52, CD19, and CD38. Molecular studies of the B-cell receptor heavy chain demonstrated monoclonality at the involved sites. The patient was treated with four cycles of fludarabine, mitoxantrone, and rituximab with complete remission. She had recurrence in the subcutaneous tissue of the back at 12 months but has remained free of intracranial disease for 31 months. A review of the literature reveals 57 cases of dural MALT lymphoma. Only 4 had extra-CNS involvement at presentation, and only 3 had local recurrence of the dural tumor. Because of the indolent behavior of this tumor, the intracranial portion can be treated conservatively after resection with or without chemotherapy. Deferral of brain radiation can be considered with close clinical and neuroimaging follow up.
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Affiliation(s)
- Kelly Matmati
- Medical University of South Carolina, Charleston, SC, USA
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Sacho RH, Kogels M, du Plessis D, Jowitt S, Josan VA. Primary diffuse large B-cell central nervous system lymphoma presenting as an acute space-occupying subdural mass. J Neurosurg 2010; 113:384-7. [PMID: 20225921 DOI: 10.3171/2010.2.jns091554] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Primary dural lymphomas are very rare tumors--usually low-grade B-cell lymphomas of mucosa-associated lymphoid tissue type or marginal zone B-cell lymphomas. Primary dural involvement by diffuse large B-cell lymphoma is extremely rare, with only a few cases reported in the literature. The authors present an unusual case of primary dural involvement by a high-grade diffuse large B-cell lymphoma that presented as an acute subdural space-occupying mass and required emergency neurosurgical intervention.
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Affiliation(s)
- Raphael H Sacho
- Department of Neurosurgery, Salford Royal NHS Foundation Trust, Salford, UK.
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Peltier J, Fichten A, Lefranc M, Toussaint P, Desenclos C, Pruvot AS, Nicot B, Le Gars D. [Follicular dural lymphoma. Case report]. Neurochirurgie 2009; 55:345-9. [PMID: 19428037 DOI: 10.1016/j.neuchi.2008.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Accepted: 12/17/2008] [Indexed: 10/20/2022]
Abstract
A case of a meningeal B-cell lymphoma is described. A 48-year-old man presented with an episode of grand mal seizure following a brain injury. An initial diagnosis of extradural hematoma was made based on the results of the cerebral computerized tomography scan. Magnetic resonance images demonstrated an enhanced mass with a dural tail attached to the meningeal layer of the temporal bone, suggesting a meningioma "en plaque". The mass was surgically excised. Tumoral removal was subcomplete (Simpson 2). Operative inspection also suggested a meningioma, but histological analysis and electron microscopy revealed a grade IV follicular B-cell lymphoma. Biological studies were normal. An extensive workup found an external iliac adenopathy with several osseous locations on PET. The patient underwent chemotherapy and radiotherapy. Three years after the first symptoms appeared, the patient is alive and free of symptoms. The clinicopathological features and treatments were discussed.
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Affiliation(s)
- J Peltier
- Service de neurochirurgie, centre hospitalier universitaire d'Amiens, place Victor-Pauchet, 80054 Amiens cedex 1, France.
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Primary meningeal CNS lymphoma treated with intra-arterial chemotherapy and blood-brain barrier disruption. J Neurooncol 2008; 90:329-33. [PMID: 18758913 DOI: 10.1007/s11060-008-9667-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Accepted: 07/24/2008] [Indexed: 10/21/2022]
Abstract
Diffuse large B-cell lymphoma of the meninges is a particularly rare form of primary CNS lymphoma. We report a case of a 63-year-old woman found to have primary meningeal lymphoma (PML) with dural and leptomeningeal involvement whom we treated with multiple cycles of intra-arterial (IA) methotrexate, intravenous (IV) etoposide phosphate, and IV cyclophosphamide after reversible osmotic blood-brain barrier disruption (BBBD). Improvement was evident on gadolinium-enhanced brain MRI one month into therapy. At 67 months post-diagnosis there is no evidence of CNS disease. After completing her therapy regimen, she remained disease-free for 34 months, when stage IV diffuse large B-cell lymphoma was discovered in her left adrenal gland and right thigh. Following six cycles of rituximab and CHOP treatment, she is presently in complete remission. IA methotrexate and reversible osmotic BBBD without radiation therapy may be an effective therapy for treating PML.
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