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Ribas GA, de Mori LH, Freddi TDAL, Oliveira LDS, de Souza SR, Corrêa DG. Primary central nervous system lymphoma: Imaging features and differential diagnosis. Neuroradiol J 2024:19714009241252625. [PMID: 38703015 DOI: 10.1177/19714009241252625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2024] Open
Abstract
Primary central nervous system lymphoma (PCNSL) represents 5% of malignant primary brain tumors. The clinical presentation typically includes focal neurological symptoms, increased intracranial pressure, seizures, and psychiatric symptoms. Although histological examination remains the gold standard for diagnostic confirmation, non-invasive imaging plays a crucial role for the diagnosis. In immunocompetent individuals, PCNSL usually appears as a single, well-defined, supratentorial lesion with a predilection for periventricular areas, iso- or hypointense on T1- and T2-weighted magnetic resonance imaging, with restricted diffusion, slightly increased perfusion, and homogenous gadolinium-enhancement. Differential diagnoses include high-grade glioma and pseudotumoral demyelinating disease. In immunocompromised patients, PCNSL may present as multiple lesions, with a higher likelihood of hemorrhage and necrosis and less restricted diffusion than immunocompetent individuals. Differential diagnoses include neurotoxoplasmosis, progressive multifocal leukoencephalopathy, and cerebral abscess. Atypical forms of lymphoma are characterized by extra-axial lymphoma, lymphomatosis cerebri, and intravascular lymphoma. Extra-axial lymphoma presents as single or multiple extra-axial dural lesions with diffuse leptomeningeal contrast-enhancement. Lymphomatosis cerebri appears as an infiltrative and symmetric lesion, primarily affecting deep white matter and basal ganglia, appearing hyperintense on T2-weighted imaging, without significant contrast-enhancement or perfusion changes. Intravascular lymphoma presents as multiple rounded or oval-shaped "infarct-like" lesions, located cortically or subcortically. This study aims to highlight the imaging characteristics of PCNSL, focusing on magnetic resonance imaging and its differential diagnosis.
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Affiliation(s)
| | | | | | | | | | - Diogo Goulart Corrêa
- Department of Diagnostic Imaging, Rio de Janeiro State University, Brazil
- Department of Radiology, Clínica de Diagnóstico por Imagem (CDPI)/DASA, Brazil
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Cornell I, Al Busaidi A, Wastling S, Anjari M, Cwynarski K, Fox CP, Martinez-Calle N, Poynton E, Maynard J, Thust SC. Early MRI Predictors of Relapse in Primary Central Nervous System Lymphoma Treated with MATRix Immunochemotherapy. J Pers Med 2023; 13:1182. [PMID: 37511795 PMCID: PMC10381964 DOI: 10.3390/jpm13071182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Primary Central Nervous System Lymphoma (PCNSL) is a highly malignant brain tumour. We investigated dynamic changes in tumour volume and apparent diffusion coefficient (ADC) measurements for predicting outcome following treatment with MATRix chemotherapy in PCNSL. Patients treated with MATRix (n = 38) underwent T1 contrast-enhanced (T1CE) and diffusion-weighted imaging (DWI) before treatment, after two cycles and after four cycles of chemotherapy. Response was assessed using the International PCNSL Collaborative Group (IPCG) imaging criteria. ADC histogram parameters and T1CE tumour volumes were compared among response groups, using one-way ANOVA testing. Logistic regression was performed to examine those imaging parameters predictive of response. Response after two cycles of chemotherapy differed from response after four cycles; of the six patients with progressive disease (PD) after four cycles of treatment, two (33%) had demonstrated a partial response (PR) or complete response (CR) after two cycles. ADCmean at baseline, T1CE at baseline and T1CE percentage volume change differed between response groups (0.005 < p < 0.038) and were predictive of MATRix treatment response (area under the curve: 0.672-0.854). Baseline ADC and T1CE metrics are potential biomarkers for risk stratification of PCNSL patients early during remission induction therapy with MATRix. Standard interim response assessment (after two cycles) according to IPCG imaging criteria does not reliably predict early disease progression in the context of a conventional treatment approach.
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Affiliation(s)
- Isabel Cornell
- UCL Institute of Neurology, Department of Brain Rehabilitation and Repair, Queen Square, London WC1N 3BG, UK
| | - Ayisha Al Busaidi
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London WC1N 3BG, UK
- Neuroradiology Department, Kings College Hospital NHS Foundation Trust, London SE5 9RS, UK
| | - Stephen Wastling
- UCL Institute of Neurology, Department of Brain Rehabilitation and Repair, Queen Square, London WC1N 3BG, UK
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London WC1N 3BG, UK
| | - Mustafa Anjari
- UCL Institute of Neurology, Department of Brain Rehabilitation and Repair, Queen Square, London WC1N 3BG, UK
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London WC1N 3BG, UK
- Radiology Department, Royal Free London NHS Foundation Trust, London NW3 2QG, UK
| | - Kate Cwynarski
- Haematology Department, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK
| | - Christopher P Fox
- School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
| | | | - Edward Poynton
- Haematology Department, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK
| | - John Maynard
- UCL Institute of Neurology, Department of Brain Rehabilitation and Repair, Queen Square, London WC1N 3BG, UK
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London WC1N 3BG, UK
| | - Steffi C Thust
- UCL Institute of Neurology, Department of Brain Rehabilitation and Repair, Queen Square, London WC1N 3BG, UK
- Precision Imaging Beacon, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
- Neuroradiology Department, Nottingham University Hospitals NHS Trust, Nottingham NG7 2UH, UK
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CT and MRI features in 22 cases of primary malignant thymic germ cell tumours. Clin Radiol 2022; 77:390-398. [DOI: 10.1016/j.crad.2022.01.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 01/12/2022] [Indexed: 11/23/2022]
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Filtration-Histogram Based Magnetic Resonance Texture Analysis (MRTA) for the Distinction of Primary Central Nervous System Lymphoma and Glioblastoma. J Pers Med 2021; 11:jpm11090876. [PMID: 34575653 PMCID: PMC8472730 DOI: 10.3390/jpm11090876] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 11/16/2022] Open
Abstract
Primary central nervous system lymphoma (PCNSL) has variable imaging appearances, which overlap with those of glioblastoma (GBM), thereby necessitating invasive tissue diagnosis. We aimed to investigate whether a rapid filtration histogram analysis of clinical MRI data supports the distinction of PCNSL from GBM. Ninety tumours (PCNSL n = 48, GBM n = 42) were analysed using pre-treatment MRI sequences (T1-weighted contrast-enhanced (T1CE), T2-weighted (T2), and apparent diffusion coefficient maps (ADC)). The segmentations were completed with proprietary texture analysis software (TexRAD version 3.3). Filtered (five filter sizes SSF = 2-6 mm) and unfiltered (SSF = 0) histogram parameters were compared using Mann-Whitney U non-parametric testing, with receiver operating characteristic (ROC) derived area under the curve (AUC) analysis for significant results. Across all (n = 90) tumours, the optimal algorithm performance was achieved using an unfiltered ADC mean and the mean of positive pixels (MPP), with a sensitivity of 83.8%, specificity of 8.9%, and AUC of 0.88. For subgroup analysis with >1/3 necrosis masses, ADC permitted the identification of PCNSL with a sensitivity of 96.9% and specificity of 100%. For T1CE-derived regions, the distinction was less accurate, with a sensitivity of 71.4%, specificity of 77.1%, and AUC of 0.779. A role may exist for cross-sectional texture analysis without complex machine learning models to differentiate PCNSL from GBM. ADC appears the most suitable sequence, especially for necrotic lesion distinction.
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Weinberg BD, Kuruva M, Shim H, Mullins ME. Clinical Applications of Magnetic Resonance Spectroscopy in Brain Tumors: From Diagnosis to Treatment. Radiol Clin North Am 2021; 59:349-362. [PMID: 33926682 PMCID: PMC8272438 DOI: 10.1016/j.rcl.2021.01.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Magnetic resonance spectroscopy (MRS) is a valuable tool for imaging brain tumors, primarily as an adjunct to conventional imaging and clinical presentation. MRS is useful in initial diagnosis of brain tumors, helping differentiate tumors from possible mimics such as metastatic disease, lymphoma, demyelination, and infection, as well as in the subsequent follow-up of patients after resection and chemoradiation. Unfortunately, the spectroscopic appearance of many pathologies can overlap, and ultimately follow-up or biopsy may be required to make a definitive diagnosis. Future developments may continue to increase the value of MRS for initial diagnosis, treatment planning, and early detection of recurrence.
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Affiliation(s)
- Brent D Weinberg
- Radiology and Imaging Sciences, Emory University, 1364 Clifton Road Northeast BG20, Atlanta, GA 30322, USA.
| | - Manohar Kuruva
- Radiology and Imaging Sciences, Emory University, 1364 Clifton Road Northeast BG20, Atlanta, GA 30322, USA
| | - Hyunsuk Shim
- Radiation Oncology, Emory University, 1365 Clifton Road Northeast, Atlanta, GA 30322, USA
| | - Mark E Mullins
- Radiology and Imaging Sciences, Emory University, 1364 Clifton Road Northeast BG20, Atlanta, GA 30322, USA
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Voultsinou D, Mantatzis M, Gerukis T, Heva A, Birbilis T, Prassopoulos P. Magnetic Resonance Imaging patterns in central nervous system lymphomas: A pictorial review. Clin Imaging 2021; 78:1-7. [PMID: 33706068 DOI: 10.1016/j.clinimag.2021.02.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 12/09/2020] [Accepted: 02/08/2021] [Indexed: 11/16/2022]
Abstract
Five distinctive Magnetic Resonance Imaging (MRI) patterns of Central Nervous System Lymphomas (CNSL) are introduced in this pictorial essay - in an attempt to differentiate lymphoma from other abnormalities with similar MRI appearance, - namely a. solitary supratentorial, b. multiple supratentorial, c. infratentorial, d. intravascular, and e. extraparencymal. Recognition of a specific imaging pattern on brain MR imaging, may facilitate the early diagnosis and prompt treatment initiation, thus improving prognosis of brain lymphoma.
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Affiliation(s)
| | - Michalis Mantatzis
- Department of Radiology, University Hospital of Alexandroupolis, Democritus University of Thrace, Greece.
| | | | - Angeliki Heva
- Department of Pathology, AHEPA University Hospital of Thessaloniki, Aristotle University, Thessaloniki, Greece
| | - Theodosios Birbilis
- Department of Neurosurgery, University Hospital of Alexandroupolis, Democritus University of Thrace, Greece
| | - Panos Prassopoulos
- Department of Radiology, AHEPA University Hospital of Thessaloniki, Aristotle University, Thessaloniki, Greece
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He YX, Qu CX, He YY, Shao J, Gao Q. Conventional MR and DW imaging findings of cerebellar primary CNS lymphoma: comparison with high-grade glioma. Sci Rep 2020; 10:10007. [PMID: 32561819 PMCID: PMC7305207 DOI: 10.1038/s41598-020-67080-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 06/01/2020] [Indexed: 12/14/2022] Open
Abstract
Primary central nervous system lymphomas (PCNSLs) and high-grade gliomas (HGGs) arising in the cerebellum is extremely low, making the differential diagnosis difficult or even impossible. The purpose of this study was to define the MR features of cerebellar PCNSL in immunocompetent patients, and to determine whether a combination of conventional MR and DW imaging can assist in the differentiation of PCNSLs and HGGs. Twelve PCNSLs and 15 HGGs confirmed by pathological analysis were retrospectively identified. The apparent diffusion coefficient (ADC) and conventional MRI parameters were compared for differences between PCNSL and HGG groups using the independent sample t test or chi-square test. Both ADCmin and ADCtotal values were lower in the PCNSL group than those in the HGG group (ADCmin: 0.53 × 10−3 vs. 0.83 × 10−3 mm2/sec, P < 0.001; ADCtotal: 0.66 × 10−3 vs. 0.98 × 10−3 mm2/sec, P = 0.001). As for conventional MR features, there were significant difference in the tumor size, enhancement patterns, the presence of cystic changes, edema degree and streak-like edema (all P < 0.01); but there were no significant difference in lesion type, the presence of bleeding, and involvement of brain surface between two groups (P = 0.554, 0.657 and 0.157, respectively). The results revealed that several conventional MR features, including enhancement patterns, branch-like enhancement and streak-like edema may be useful for the differentiation of PCNSL and HGG in cerebellum and, when combined with ADC values, further improve the discriminating ability.
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Affiliation(s)
- Ye-Xin He
- Department of Radiology, Shanxi Provincial People's Hospital, Affiliated People's Hospital of Shanxi Medical University, Taiyuan, 030012, China.
| | - Chong-Xiao Qu
- Department of Pathology, Shanxi Provincial People's Hospital, Affiliated People's Hospital of Shanxi Medical University, Taiyuan, 030012, China
| | - Yuan-Yan He
- Department of Medical Imaging, Shanxi Medical University, Taiyuan, 030001, China
| | - Jia Shao
- Department of Medical Imaging, Shanxi Medical University, Taiyuan, 030001, China
| | - Qiang Gao
- Department of Radiology, Shanxi Provincial People's Hospital, Affiliated People's Hospital of Shanxi Medical University, Taiyuan, 030012, China
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Guo R, Zhang X, Niu C, Xi Y, Yin H, Lin H, Chang T. Primary central nervous system small lymphocytic lymphoma in the bilateral ventricles: two case reports. BMC Neurol 2019; 19:200. [PMID: 31426757 PMCID: PMC6699128 DOI: 10.1186/s12883-019-1430-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 08/15/2019] [Indexed: 11/12/2022] Open
Abstract
Background Primary central nervous system (CNS) small lymphocytic lymphoma (SLL), as a type of low-grade lymphoma, is extremely rare. The diagnosis of CNS SLL is challenging due to its variable clinical and radiological features, which may overlap with those of diffuse large B-cell lymphoma (DLBCL). Primary CNS SLL differs from DLBCL in that it has an indolent clinical course and a good prognosis. Thus, it is important to distinguish SLL from DLBCL. By reviewing the literature, only two cases of low-grade SLL, primarily located in the CNS and involving the brain parenchyma and dura, have been reported. To our knowledge, primary CNS SLL in the bilateral ventricles has never been reported. Interestingly, the two cases in our report are identical in terms of the clinical presentations, magnetic resonance imaging (MRI) features, pathological results and prognoses. Case presentation Both patients presented with headaches. MRI suggested solid lesions located in the bilateral ventricles that were isointense on T1-weighted images and hypointense on T2-weighted images. After the injection of contrast agent (gadolinium, Gd), the intraventricular lesions were homogeneously enhanced and hyperperfused. CSF cytology revealed malignant cells. Brain biopsy revealed diffuse proliferation of small lymphocytes with positive labelling of B-cell immunomarkers. The primary origin in the CNS was confirmed with no evidence of systemic lymphoma. Two patients were given high doses of methotrexate-based chemotherapy and were free from symptoms and progression for more than 1-year of follow-up. Conclusions The presence of homogeneously enhanced intraventricular MRI lesions should raise the suspicion of primary CNS SLL.
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Affiliation(s)
- Rongjing Guo
- Department of Neurology, Tangdu Hospital, the Air Force Medical University, 569 Xinsi Road, Xi'an, Shaanxi Province, 710038, People's Republic of China
| | - Xiaolong Zhang
- Department of Neurology, Tangdu Hospital, the Air Force Medical University, 569 Xinsi Road, Xi'an, Shaanxi Province, 710038, People's Republic of China
| | - Chunxiao Niu
- Department of Neurology, Tangdu Hospital, the Air Force Medical University, 569 Xinsi Road, Xi'an, Shaanxi Province, 710038, People's Republic of China
| | - Yibin Xi
- Department of Radiology, Xijing Hospital, the Air Force Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | - Hong Yin
- Department of Radiology, Xijing Hospital, the Air Force Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | - Hong Lin
- Department of Neurology, Tangdu Hospital, the Air Force Medical University, 569 Xinsi Road, Xi'an, Shaanxi Province, 710038, People's Republic of China
| | - Ting Chang
- Department of Neurology, Tangdu Hospital, the Air Force Medical University, 569 Xinsi Road, Xi'an, Shaanxi Province, 710038, People's Republic of China.
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Demir MK, Yapıcıer O, Hasanov T, Gunduz MA, Kılıc T. Systemic large B-cell non-Hodgkin lymphoma presenting as a massive hemorrhagic intracerebral mass. Diagn Interv Imaging 2017. [PMID: 28624299 DOI: 10.1016/j.diii.2017.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- M K Demir
- Department of radiology, Bahçeşehir university school of medicine, Göztepe medical park hospital, Istanbul, Turkey.
| | - O Yapıcıer
- Department of pathology, Bahçeşehir university school of medicine, Göztepe medical park hospital, Istanbul, Turkey.
| | - T Hasanov
- Department of neurosurgery, Bahçeşehir university school of medicine, Göztepe medical park hospital, Istanbul, Turkey.
| | - M A Gunduz
- Medical student, Bahcesehir university school of medicine, Istanbul, Turkey.
| | - T Kılıc
- Department of neurosurgery, Bahçeşehir university school of medicine, Göztepe medical park hospital, Istanbul, Turkey.
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