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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Almanac of Clinical Medicine</journal-id><journal-title-group><journal-title xml:lang="en">Almanac of Clinical Medicine</journal-title><trans-title-group xml:lang="ru"><trans-title>Альманах клинической медицины</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-0505</issn><issn publication-format="electronic">2587-9294</issn><publisher><publisher-name xml:lang="en">Moscow Regional Research and Clinical Institute (MONIKI)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1243</article-id><article-id pub-id-type="doi">10.18786/2072-0505-2020-48-007</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEW ARTICLE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОР</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical heterogeneity of chronic inflammatory demyelinating polyneuropathy: diagnostic challenges</article-title><trans-title-group xml:lang="ru"><trans-title>Клиническая гетерогенность хронической воспалительной демиелинизирующей полинейропатии: трудности диагностики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9890-3552</contrib-id><name-alternatives><name xml:lang="en"><surname>Rizvanova</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Ризванова</surname><given-names>А. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Alina S. Rizvanova</bold> – MD, Neurologist, Center of Peripheral Nerve Disorders.</p><p>80 Volokolamskoe shosse, Moscow, 125367Tel.: +7 (967) 250 37 93 </p></bio><bio xml:lang="ru"><p><bold>Ризванова Алина Сафовна</bold> – врач-невролог Центра заболеваний периферической нервной системы.</p><p>125367, г. Москва, Волоколамское шоссе, 80Тел.: +7 (967) 250 37 93 </p></bio><email>rizvanova.alina@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7924-3405</contrib-id><name-alternatives><name xml:lang="en"><surname>Grishina</surname><given-names>D. A.</given-names></name><name xml:lang="ru"><surname>Гришина</surname><given-names>Д. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Daria A. Grishina</bold> – MD, PhD, Head of the Center of Peripheral Nerve Disorders.</p><p>80 Volokolamskoe shosse, Moscow, 125367</p></bio><bio xml:lang="ru"><p><bold>Гришина Дарья Александровна</bold> – канд. мед. наук, руководитель Центра заболеваний периферической нервной системы.</p><p>125367, г. Москва, Волоколамское шоссе, 80</p></bio><email>dgrishina82@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3956-6362</contrib-id><name-alternatives><name xml:lang="en"><surname>Suponeva</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Супонева</surname><given-names>Н. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Natalia A. Suponeva</bold> – MD, PhD, Professor, Corr. Member of Russ. Acad. Sci., Head of the Department of Neurorehabilitation and Physiotherapy.</p><p>80 Volokolamskoe shosse, Moscow, 125367</p></bio><bio xml:lang="ru"><p><bold>Супонева Наталья Александровна</bold> – д-р мед. наук, профессор, чл.-корр. РАН, руководитель отделения нейрореабилитации и физиотерапии.</p><p>125367, г. Москва, Волоколамское шоссе, 80</p></bio><email>nasu2709@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Neurology</institution></aff><aff><institution xml:lang="ru">ФГБНУ «Научный центр неврологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-03-17" publication-format="electronic"><day>17</day><month>03</month><year>2020</year></pub-date><volume>48</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>56</fpage><lpage>64</lpage><history><date date-type="received" iso-8601-date="2020-03-06"><day>06</day><month>03</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-03-06"><day>06</day><month>03</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Rizvanova A.S., Grishina D.A., Suponeva N.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Ризванова А.С., Гришина Д.А., Супонева Н.А.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Rizvanova A.S., Grishina D.A., Suponeva N.A.</copyright-holder><copyright-holder xml:lang="ru">Ризванова А.С., Гришина Д.А., Супонева Н.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://almclinmed.ru/jour/article/view/1243">https://almclinmed.ru/jour/article/view/1243</self-uri><abstract xml:lang="en"><p>Сhronic inflammatory demyelinating polyneuropathy (CIDP) is the most prevalent acquired dysimmune neuropathy with clinical picture of symmetric motor and sensory disturbances. Since the first description of CIDP, many atypical variants have been described, which may reach up to 50% of cases. Diagnosis of atypical CIDP may be challenging due to different clinical presentation and treatment response. Current researches improve our knowledge about dysimmune neuropathies and highlight the importance of its classification. Nowadays CIDP is considered as a spectrum of disorders rather than a separate disease entity. Up to date, more than 15 diagnostic criteria have been proposed reflecting the complexity of СIDP diagnosis. Many polyneuropathies may mimic CIDP, therefore CIDP is frequently a diagnosis of exclusion. The key diagnostic instrument is electroneuromyography; however, the issues related to results misinterpretation and some technical aspects are the most important in CIDP misdiagnosis. Supportive instrumental and laboratory methods have variable sensitivity and specificity, making challenging CIDP diagnosis, especially its atypical forms. The importance of an early and accurate diagnosis of CIDP is supported by an effective pathogenic treatment, which affects the patient's prognosis and level of disability.</p></abstract><trans-abstract xml:lang="ru"><p>Хроническая воспалительная демиелинизирующая полинейропатия (ХВДП) – самая распространенная приобретенная нейропатия дизиммунного генеза, проявляющаяся симметричным двигательным дефицитом и нарушениями чувствительности. С момента первого упоминания о заболевании описано множество вариантов его атипичного течения, которые составляют около половины всех случаев ХВДП и характеризуются особенностями диагностики и ответа на терапию. Активное изучение патогенеза ХВДП способствует получению новой информации о группе дизиммунных нейропатий в целом и ставит вопрос о классификации этих заболеваний. В настоящее время ХВДП рассматривается скорее как спектр заболеваний, нежели отдельная нозология. Предложено более 15 диагностических критериев, что обусловливает трудности диагностики этого заболевания. Многие полинейропатии имеют схожую с ХВДП клиническую картину, поэтому нередко ХВДП становится диагнозом исключения. Ключевым инструментальным методом считается электронейромиография, однако именно с особенностями ее проведения и интерпретацией результатов связано наибольшее количество случаев ошибочного диагноза. Дополнительные лабораторно-инструментальные методы диагностики обладают вариабельной чувствительностью и специфичностью, в связи с чем определение достаточного и необходимого объема обследования, особенно в случаях атипичного течения заболевания, становится непростой задачей. Очевидно, что необходимость грамотной и своевременной диагностики тесно сопряжена с наличием эффективной патогенетической терапии, определяющей прогноз и степень инвалидизации пациента.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chronic inflammatory demyelinating polyneuropathy</kwd><kwd>dysimmune neuropathy</kwd><kwd>polyneuropathy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>хроническая воспалительная демиелинизирующая полинейропатия</kwd><kwd>дизиммунные полинейропатии</kwd><kwd>полинейропатия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lozeron P, Mariani LL, Dodet P, Beaudonnet G, Théaudin M, Adam C, Arnulf B, Adams D. Transthyretin amyloid polyneuropathies mimicking a demyelinating polyneuropathy. Neurology. 2018;91(2):e143–52. doi: 10.1212/WNL.0000000000005777.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Dyck PJB, Tracy JA. 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