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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">avk</journal-id><journal-title-group><journal-title xml:lang="ru">Архивъ внутренней медицины</journal-title><trans-title-group xml:lang="en"><trans-title>The Russian Archives of Internal Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-6704</issn><issn pub-type="epub">2411-6564</issn><publisher><publisher-name>“SINAPS” LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20514/2226-6704-2024-14-1-5-14</article-id><article-id custom-type="edn" pub-id-type="custom">ADHFWJ</article-id><article-id custom-type="elpub" pub-id-type="custom">avk-1712</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>РАЗБОР КЛИНИЧЕСКИХ СЛУЧАЕВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ANALYSIS OF CLINICAL CASES</subject></subj-group></article-categories><title-group><article-title>Лейкемоидная реакция у пациента старческого возраста с инфекционным эндокардитом аортального клапана и аденокарциномой поджелудочной железы</article-title><trans-title-group xml:lang="en"><trans-title>Leukemoid Reaction in an Elderly Patient with Aortic Valve Infective Endocarditis and Pancreatic Adenocarcinoma</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7479-418X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Резник</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Reznik</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Резник Е.В.,</p><p>Москва.</p></bio><bio xml:lang="en"><p>E.V. Reznik, </p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3780-4358</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Батов</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Batov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Батов Максим Александрович,</p><p>Москва.</p></bio><bio xml:lang="en"><p>M.A. Batov, </p><p>Moscow.</p></bio><email xlink:type="simple">md.batov@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8431-4397</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Апарина</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Aparina</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Апарина Т.В.,</p><p>Москва.</p></bio><bio xml:lang="en"><p>T.V. Aparina, </p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ким</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kim</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>О.В. Ким, </p><p>Москва.</p></bio><bio xml:lang="en"><p>O.V. Kim,</p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4639-7237</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шурдумова</surname><given-names>М. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Shurdumova</surname><given-names>M. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шурдумова М.Х., </p><p>Москва.</p></bio><bio xml:lang="en"><p>M.Kh. Shurdumova, </p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2052-914X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михалева</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhaleva</surname><given-names>L. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михалева Л.М.,</p><p>Москва .</p></bio><bio xml:lang="en"><p>L.M. Mikhaleva, </p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9979-4140</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнов</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Смирнов А.П.,</p><p>Москва.</p></bio><bio xml:lang="en"><p>A.P. Smirnov, </p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0161-005X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Голухов</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Golukhov</surname><given-names>G. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Голухов Г.Н.,</p><p>Москва.</p><p> </p></bio><bio xml:lang="en"><p>G.N. Golukhov,</p><p>Moscow.</p></bio><xref ref-type="aff" rid="aff-6"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации; Государственное бюджетное учреждение здравоохранения города Москвы «Городская клиническая больница № 31 имени академика Г.М. Савельевой Департамента здравоохранения города Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pirogov Russian National Research Medical University; Academician G.M. Savelyeva City Clinical Hospital № 31</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский научный исследовательский онкологический институт имени П.А. Герцена</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.A. Hertsen Moscow Oncology Research Institute — National Medical Research Radiological Center of Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pirogov Russian National Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Государственное бюджетное учреждение здравоохранения города Москвы «Городская клиническая больница № 31 имени академика Г.М. Савельевой Департамента здравоохранения города Москвы»; Научно-исследовательский институт морфологии человека имени академика А.П. Авцына» Федерального государственного бюджетного научного учреждения «Российский научный центр хирургии имени академика Б.В. Петровского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Academician G.M. Savelyeva City Clinical Hospital № 31; Avtsyn Research Institute of Human Morphology of Federal state budgetary scientific institution «Petrovsky National Research Centre of Surgery»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Федеральное государственное автономное образовательное учреждение высшего образования «Российский национальный исследовательский медицинский университет имени Н.И. Пирогова» Министерства здравоохранения Российской Федерации; Государственное бюджетное учреждение здравоохранения города Москвы «Городская поликлиника № 212 Департамента здравоохранения города Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pirogov Russian National Research Medical University; City Polyclinic № 212</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Государственное бюджетное учреждение здравоохранения города Москвы «Городская клиническая больница № 31 имени академика Г.М. Савельевой Департамента здравоохранения города Москвы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Academician G.M. Savelyeva City Clinical Hospital № 31</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>02</month><year>2024</year></pub-date><volume>14</volume><issue>1</issue><fpage>5</fpage><lpage>14</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Резник Е.В., Батов М.А., Апарина Т.В., Ким О.В., Шурдумова М.Х., Михалева Л.М., Смирнов А.П., Голухов Г.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Резник Е.В., Батов М.А., Апарина Т.В., Ким О.В., Шурдумова М.Х., Михалева Л.М., Смирнов А.П., Голухов Г.Н.</copyright-holder><copyright-holder xml:lang="en">Reznik E.V., Batov M.A., Aparina T.V., Kim O.V., Shurdumova M.K., Mikhaleva L.M., Smirnov A.P., Golukhov G.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.medarhive.ru/jour/article/view/1712">https://www.medarhive.ru/jour/article/view/1712</self-uri><abstract><p>Лейкемоидная реакция (ЛР), связанная с солидными опухолями, документируется на протяжении многих десятилетий, и часто ассоциирована с неблагоприятным прогнозом и агрессивным течением заболевания. Вместе с тем, дифференциальная диагностика ЛР представляет значительные трудности при наличии у пациента нескольких потенциальных этиологических факторов, каждый из которых по отдельности может быть причиной ЛР, или, напротив, приводить к системной реакции организма в рамках общего патогенетического сценария.</p><p>Нами представлено клиническое наблюдение пациентки старческого возраста, госпитализированной в отделение реанимации и интенсивной терапии в связи с впервые развившейся слабостью в правых конечностях. При клинико-лабораторно-инструментальном обследовании подтверждено острое нарушение мозгового кровообращения по ишемическому типу на фоне нарастания в течение 5 суток лейкоцитоза до 60 тыс. клеток/мкл со сдвигом лейкоцитарной формулы влево и декомпенсацией состояния пациентки с последующим летальным исходом, несмотря на проводимую терапию.</p><p>При аутопсии выявлена низкодифференцированная аденокарцинома хвоста поджелудочной железы с множественным метастатическим поражением региональных лимфатических узлов и печени, а также конкурирующее заболевание — острый инфекционный эндокардит аортального клапана, явившийся причиной развития сепсиса по типу септикопиемии и тромбоэмболии как по большому кругу кровообращения с наличием ишемического инфаркта головного мозга, инфарктов селезенки, так и по малому кругу с развитием тромбоэмболов в правых сегментарных ветвях легочной артерии. Учитывая распространенный характер рака поджелудочной железы и отсутствие прямых данных за активный инфекционный процесс на этапе первичной диагностики, более вероятен паранеопластический характер ЛР, однако инфекционный эндокардит и сопутствующая патология могли также внести свой вклад в развитие ЛР.</p></abstract><trans-abstract xml:lang="en"><p>Leukemoid reaction (LR) associated with solid tumors has been documented for many decades. LR is often associated with an unfavorable prognosis and aggressive course of the disease. However, the differential diagnosis of LR is of significant difficulty when a patient has several potential etiological factors, each of them individually may cause LR or, on the contrary, lead to a systemic reaction of the body within a single pathogenetic chain.</p><p>We present a clinical observation of an elderly patient admitted to the intensive care unit due to the first-time encountered weakness in the right extremities. Clinical and instrumental examination revealed an acute cerebral ischemia with leukocytosis increase up to 60.000 cells/μL with leukocyte formula left shift and subsequent patient decompensation with lethal outcome, despite the intensive treatment.</p><p>Autopsy revealed a low-differentiated adenocarcinoma of the pancreatic tail with multiple metastatic lesions in regional lymph nodes and liver, as well as a competing disease — acute infective endocarditis of the aortic valve, which was the cause of sepsis development with septicemia type and thromboembolism both in the great circulation circle with the presence of ischemic cerebral infarction, spleen infarcts, and in the small circle with the development of thromboembolism in the right segmental branches of the pulmonary artery. Given the advanced stage of pancreatic cancer and lack of direct evidence of sepsis at primary diagnosis, paraneoplastic nature of LR is more likely, but infective endocarditis and concomitant pathology also may have contributed to the development of LR.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лейкемоидная реакция</kwd><kwd>острый инфекционный эндокардит</kwd><kwd>аортальный клапан</kwd><kwd>аденокарцинома поджелудочной железы</kwd><kwd>паранеопластический синдром</kwd></kwd-group><kwd-group xml:lang="en"><kwd>leukemoid reaction</kwd><kwd>acute infective endocarditis</kwd><kwd>aortic valve</kwd><kwd>pancreatic adenocarcinoma</kwd><kwd>paraneoplastic syndrome</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Abukhiran I., Mott S.L., Bellizzi A.M. et al. Paraneoplastic leukemoid reaction: Case report and review of the literature. Pathol Res Pract. 2021; 217: 153295. doi: 10.1016/j.prp.2020.153295</mixed-citation><mixed-citation xml:lang="en">Abukhiran I., Mott S.L., Bellizzi A.M. et al. Paraneoplastic leukemoid reaction: Case report and review of the literature. Pathol Res Pract. 2021; 217: 153295. doi: 10.1016/j.prp.2020.153295</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Чеснокова Н.П., Неважай Т.А., Понукалина Е.В. и др. Лейкемоидные реакции: классификация, этиология, патогенез, принципиальные отличия от лейкозов. Международный журнал экспериментального образования. 2015; 7: 186-188.</mixed-citation><mixed-citation xml:lang="en">Chesnokova N.P., Nevvazhai T.A., Ponukalina E.V. et al. Leukemoid reactions: classification, etiology, pathogenesis, fundamental differences from leukemia. Mezhdunarodnyi zhurnal eksperimental’nogo obrazovaniya. 2015; 7: 186-188. [in Russian]</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Karakonstantis S., Koulouridi M., Pitsillos K. et al. A prospective study of hospitalized patients with leukemoid reaction; causes, prognosis and value of manual peripheral smear review. Rom J Intern Med. 2019; 57(3): 241-247. doi: 10.2478/rjim-2019-0006</mixed-citation><mixed-citation xml:lang="en">Karakonstantis S., Koulouridi M., Pitsillos K. et al. A prospective study of hospitalized patients with leukemoid reaction; causes, prognosis and value of manual peripheral smear review. Rom J Intern Med. 2019; 57(3): 241-247. doi: 10.2478/rjim-2019-0006</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Chakraborty S., Keenportz B., Woodward S. et al. Paraneoplastic leukemoid reaction in solid tumors. Am J Clin Oncol. 2015; 38(3): 326-330. doi: 10.1097/COC.0b013e3182a530dd</mixed-citation><mixed-citation xml:lang="en">Chakraborty S., Keenportz B., Woodward S. et al. Paraneoplastic leukemoid reaction in solid tumors. Am J Clin Oncol. 2015; 38(3): 326-330. doi: 10.1097/COC.0b013e3182a530dd</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Abukhiran I.A., Jasser J., Syrbu S. Paraneoplastic leukemoid reactions induced by cytokine-secreting tumours. J Clin Pathol. 2020; 73(6): 310-313. doi: 10.1136/jclinpath-2019-206340</mixed-citation><mixed-citation xml:lang="en">Abukhiran I.A., Jasser J., Syrbu S. Paraneoplastic leukemoid reactions induced by cytokine-secreting tumours. J Clin Pathol. 2020; 73(6): 310-313. doi: 10.1136/jclinpath-2019-206340</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Granger J.M., Kontoyiannis D.P. Etiology and outcome of extreme leukocytosis in 758 nonhematologic cancer patients: a retrospective, single-institution study. Cancer. 2009; 115(17): 3919-3923. doi: 10.1002/cncr.24480</mixed-citation><mixed-citation xml:lang="en">Granger J.M., Kontoyiannis D.P. Etiology and outcome of extreme leukocytosis in 758 nonhematologic cancer patients: a retrospective, single-institution study. Cancer. 2009; 115(17): 3919-3923. doi: 10.1002/cncr.24480</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Quintero-Martinez JA, Hindy JR, El Zein S, et al. Contemporary demographics, diagnostics and outcomes in non-bacterial thrombotic endocarditis. Heart. 2022; heartjnl-2022-320970. doi: 10.1136/heartjnl-2022-320970</mixed-citation><mixed-citation xml:lang="en">Quintero-Martinez JA, Hindy JR, El Zein S, et al. Contemporary demographics, diagnostics and outcomes in non-bacterial thrombotic endocarditis. Heart. 2022; heartjnl-2022-320970. doi: 10.1136/heartjnl-2022-320970</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Bussani R, DE-Giorgio F, Pesel G, et al. Overview and Comparison of Infectious Endocarditis and Non-infectious Endocarditis: A Review of 814 Autoptic Cases. In Vivo. 2019; 33(5): 1565-1572. doi: 10.21873/invivo.11638</mixed-citation><mixed-citation xml:lang="en">Bussani R, DE-Giorgio F, Pesel G, et al. Overview and Comparison of Infectious Endocarditis and Non-infectious Endocarditis: A Review of 814 Autoptic Cases. In Vivo. 2019; 33(5): 1565-1572. doi: 10.21873/invivo.11638</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Itzhaki B.O., Spectre G., Leader A. Cancer-associated non-bacterial thrombotic endocarditis. Thromb Res. 2022;213 Suppl 1: S127-S132. doi: 10.1016/j.thromres.2021.11.024</mixed-citation><mixed-citation xml:lang="en">Itzhaki B.O., Spectre G., Leader A. Cancer-associated non-bacterial thrombotic endocarditis. Thromb Res. 2022;213 Suppl 1: S127-S132. doi: 10.1016/j.thromres.2021.11.024</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Kabashneh S., Ali H., Shanah L. et al. Paraneoplastic Leukocytosis: A Poor Prognostic Marker in Pancreatic Adenocarcinoma. Cureus. 2020; 12(7): e9013. doi: 10.7759/cureus.9013</mixed-citation><mixed-citation xml:lang="en">Kabashneh S., Ali H., Shanah L. et al. Paraneoplastic Leukocytosis: A Poor Prognostic Marker in Pancreatic Adenocarcinoma. Cureus. 2020; 12(7): e9013. doi: 10.7759/cureus.9013</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Sánchez-Enrique C., Vilacosta I., Moreno H.G. et al. Infected marantic endocarditis with leukemoid reaction. Circ J. 2014; 78(9): 2325-2327. doi: 10.1253/circj.cj-14-0079</mixed-citation><mixed-citation xml:lang="en">Sánchez-Enrique C., Vilacosta I., Moreno H.G. et al. Infected marantic endocarditis with leukemoid reaction. Circ J. 2014; 78(9): 2325-2327. doi: 10.1253/circj.cj-14-0079</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Dos Santos M., Bouhier K., Dao M.T. Paraneoplastic leukemoid reaction in pancreatic cancer: A case report. World J Gastrointest Oncol. 2015; 7(10): 259-262. doi: 10.4251/wjgo.v7.i10.259</mixed-citation><mixed-citation xml:lang="en">Dos Santos M., Bouhier K., Dao M.T. Paraneoplastic leukemoid reaction in pancreatic cancer: A case report. World J Gastrointest Oncol. 2015; 7(10): 259-262. doi: 10.4251/wjgo.v7.i10.259</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Sakka V., Tsiodras S., Giamarellos-Bourboulis E.J. et al. An update on the etiology and diagnostic evaluation of a leukemoid reaction. Eur J Intern Med. 2006; 17(6): 394-398. doi: 10.1016/j.ejim.2006.04.004</mixed-citation><mixed-citation xml:lang="en">Sakka V., Tsiodras S., Giamarellos-Bourboulis E.J. et al. An update on the etiology and diagnostic evaluation of a leukemoid reaction. Eur J Intern Med. 2006; 17(6): 394-398. doi: 10.1016/j.ejim.2006.04.004</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">McCoach C.E., Rogers J.G., Dwyre D.M. et al. Paraneoplastic Leukemoid Reaction as a Marker of Tumor Progression in Non-Small Cell Lung Cancer. Cancer Treat Commun. 2015; 4: 15-18. DOI: 10.1016/j.ctrc.2015.03.003</mixed-citation><mixed-citation xml:lang="en">McCoach C.E., Rogers J.G., Dwyre D.M. et al. Paraneoplastic Leukemoid Reaction as a Marker of Tumor Progression in Non-Small Cell Lung Cancer. Cancer Treat Commun. 2015; 4: 15-18. DOI: 10.1016/j.ctrc.2015.03.003</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Portich J.P., Faulhaber GAM. Leukemoid reaction: A 21st-century cohort study. Int J Lab Hematol. 2020; 42(2): 134-139. DOI: 10.1111/ijlh.13127</mixed-citation><mixed-citation xml:lang="en">Portich J.P., Faulhaber GAM. Leukemoid reaction: A 21st-century cohort study. Int J Lab Hematol. 2020; 42(2): 134-139. DOI: 10.1111/ijlh.13127</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Potasman I, Grupper M. Leukemoid reaction: spectrum and prognosis of 173 adult patients. Clin Infect Dis. 2013; 57(11): e177-e181. DOI: 10.1093/cid/cit562</mixed-citation><mixed-citation xml:lang="en">Potasman I, Grupper M. Leukemoid reaction: spectrum and prognosis of 173 adult patients. Clin Infect Dis. 2013; 57(11): e177-e181. DOI: 10.1093/cid/cit562</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Au WY, Ma SK, Kwong YL. Disseminated hepatosplenic mycobacterial infection masking myeloproliferative diseases as leukemoid reaction: a diagnostic pitfall. Leuk Lymphoma. 2001; 42(4): 805-808. DOI: 10.3109/10428190109099344</mixed-citation><mixed-citation xml:lang="en">Au WY, Ma SK, Kwong YL. Disseminated hepatosplenic mycobacterial infection masking myeloproliferative diseases as leukemoid reaction: a diagnostic pitfall. Leuk Lymphoma. 2001; 42(4): 805-808. DOI: 10.3109/10428190109099344</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Naaraayan A., Aleta M., Basak P. et al. Leukemoid reaction to Clostridium difficile infection. Anaerobe. 2015; 34: 158-160. DOI: 10.1016/j.anaerobe.2015.05.005</mixed-citation><mixed-citation xml:lang="en">Naaraayan A., Aleta M., Basak P. et al. Leukemoid reaction to Clostridium difficile infection. Anaerobe. 2015; 34: 158-160. DOI: 10.1016/j.anaerobe.2015.05.005</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Marinella M.A., Burdette S.D., Bedimo R. et al. Leukemoid reactions complicating colitis due to Clostridium difficile. South Med J. 2004; 97(10): 959-963. DOI: 10.1097/01.SMJ.0000054537.20978.D4</mixed-citation><mixed-citation xml:lang="en">Marinella M.A., Burdette S.D., Bedimo R. et al. Leukemoid reactions complicating colitis due to Clostridium difficile. South Med J. 2004; 97(10): 959-963. DOI: 10.1097/01.SMJ.0000054537.20978.D4</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Tarekegn K, Colon Ramos A, Sequeira Gross HG, Yu M, Fulger I. Leukemoid Reaction in a Patient With Severe COVID-19 Infection. Cureus. 2021; 13(2): e13598. DOI: 10.7759/cureus.13598</mixed-citation><mixed-citation xml:lang="en">Tarekegn K, Colon Ramos A, Sequeira Gross HG, Yu M, Fulger I. Leukemoid Reaction in a Patient With Severe COVID-19 Infection. Cureus. 2021; 13(2): e13598. DOI: 10.7759/cureus.13598</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
