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The spectrum of MRI findings of progres­sive multifocal leukoencephalopathy in patients with multiple sclerosis in the Czech Republic


Authors: M. Vaněčková 1;  A. Martinková 2;  R. Tupý 3;  J. Fiedler 4;  I. Štětkářová 5;  E. Medová 5;  M. Vachová 6;  J. Marková 7;  M. Grunermelová 7;  E. Meluzínová 8;  J. Adámková 9;  J. Kubále 10;  M. Talábová 11;  D. Horáková 12;  E. Kubala Havrdová 12
Authors place of work: Oddělení MR, Radiodiagnostická klinika 1. LF UK a VFN v Praze 1;  MS centrum, Neurologická klinika Pardubická krajská nemocnice 2;  Klinika zobrazovacích metod LF v Plzni UK a FN Plzeň 3;  Neurologická klinika LF v Plzni UK a FN Plzeň 4;  Neurologická klinika 3. LF UK a FN Královské Vinohrady, Praha 5;  Neurologické oddělení, Krajská zdravotní, a. s. – Nemocnice Teplice, o. z. 6;  Neurologická klinika 3. LF UK a Thomayerova nemocnice 7;  Neurologická klinika 2. LF UK a FN Motol 8;  Neurologické oddělení, Nemocnice České Budějovice, a. s. 9;  Radiologické oddělení, Nemocnice České Budějovice, a. s. 10;  MS centrum, Neurologická klinika FN Hradec Králové 11;  RS centrum, Neurologická klinika a Centrum klinických neurověd, 1. LF UK a VFN v Praze 12
Published in the journal: Cesk Slov Neurol N 2019; 82(4): 381-390
Category: Původní práce
doi: https://doi.org/10.14735/amcsnn2019381

Summary

Aim: To show the full spectrum of MRI findings in all patients ever dia­gnosed with progres­sive multifocal leukoencephalopathy (PML), which is as­sociated with natalizumab ther­apy in patients with MS in the Czech Republic.

Patients and methods: The first case was described in 2009, the last case in December 2018, with a total of 14 dia­gnosed cases of PML in MS patients. This paper evaluates the MRI findings that showed the presence of PML; the dia­gnosis was subsequently confirmed by detection of the John Cun­ningham virus (JCV) DNA from cerebrospinal fluid using polymerase chain reaction. All patients met the American Academy of Neurology criteria from 2013 for dia­gnosis of this dis­ease. The MRI protocol used was variable, both because patients were examined at dif­ferent MRI sites across the Czech Republic, and because of evolution of protocols over time. In all patients, the protocol contained fluid attenuated inversion recovery (FLAIR), which is the most sensitive sequence for early PML detection.

Results: 13 patients (92.9%) had a positive MRI find­­ing. The most frequent find­­ing was typical white matter involvement in the subcortical area of the frontal lobe (42.9%), fol­lowed by the parietal (28.6%) and temporal lobes (28.6%). The extent of the pathology was also very variable, from very small discrete lesions to extensive dif­fuse lesions af­fect­­ing multiple lobes. Two patients were found to have cerebel­lar and pons foci (14.3%), one patient in the mesencephalon and another in the medula oblongata. There were thalamic lesions in two cases, and one case of putamen lesions. In some cases, MRI presentation of PML was very similar to the MRI presentation of MS and suspicion of PML was considered because there was new progression of MRI. One patient was completely atypical compared to the rest of the group. PML was dia­gnosed from a routine lumbar puncture done when ther­apy was changed, and the MRI find­­ing at that time was negative. Positive findings appeared only 6 months after the PML dia­gnosis. This case involved the JCV-granulocytic neuronopathy with cerebel­lum af­fection subtype.

Conclusion: The Czech cohort of PML patients confirms the great variability in MRI findings and points out the importance of careful MRI monitor­­ing to detect the dis­ease in the subclinical phase.

The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.

The Editorial Board declares that the manuscript met the ICMJE “uniform requirements” for biomedical papers.


捷克共和国多发性硬化症患者进行性多灶性白质脑病的MRI表现谱

目的:显示所有曾被诊断为进行性多灶性白质脑病(PML)患者的MRI全谱表现,与捷克多发性硬化患者纳他利珠单抗治疗有关。


患者和方法:第一个病例描述于2009年,最后一个病例描述于2018年12月,在MS患者中总共诊断出14例PML病例。本文对显示PML存在的MRI表现进行了评价;随后使用聚合酶链反应从脑脊液中检测到约翰·坎宁安病毒(JCV) DNA,从而确诊。从2013年开始,所有患者均符合美国神经科学会诊断该病的标准。所使用的MRI方案是可变的,这既是因为在捷克共和国的不同MRI站点对患者进行了检查,又是由于随着时间的推移方案的发展。在所有患者中,该方案均包含体液衰减倒置恢复(FLAIR),这是早期PML检测最敏感的序列。


结果:13例(92.9%)的MRI阳性。最常见的发现是额叶皮层下区域典型的白质受累(42.9%),其次是顶叶(28.6%)和颞叶(28.6%)。病理范围也很不稳定,从很小的离散病变到广泛的弥漫性病变影响多个肺叶。两名患者发现小脑和桥脑病灶(14.3%),一名患者在中脑,另一名患者在延髓。有丘脑病变2例,壳核病变1例。在某些情况下,PML的MRI表现与MS的MRI表现非常相似,并且考虑到PML的怀疑是因为MRI有新的进展。与其他组相比,一名患者完全不典型。根据更换疗法后的常规腰穿检查诊断为PML,当时MRI呈阴性。 PML诊断后仅6个月才出现阳性结果。该病例涉及具有小脑情感亚型的JCV-粒细胞性神经病。


结论:捷克的PML患者队列证实了MRI表现的巨大差异,并指出了认真进行MRI监测以检测亚临床阶段疾病的重要性。


关键词:多发性硬化–进行性多灶性白质脑病– MRI –无症状影像

Keywords:

Multiple sclerosis – progressive multifocal leukoencephalopathy – MRI – asymptomatic imaging


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Dětská neurologie Neurochirurgie Neurologie
Článek Editorial

Článek vyšel v časopise

Česká a slovenská neurologie a neurochirurgie

Číslo 4

2019 Číslo 4
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