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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">oncotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский онкологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian journal of oncology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-4861</issn><issn pub-type="epub">2312-3168</issn><publisher><publisher-name>Tomsk National Research Medical Сепtеr of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21294/1814-4861-2021-20-2-136-140</article-id><article-id custom-type="elpub" pub-id-type="custom">oncotomsk-1766</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>СЛУЧАЙ ИЗ КЛИНИЧЕСКОЙ ПРАКТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CASE REPORTS</subject></subj-group></article-categories><title-group><article-title>РЕДКАЯ МОРФОЛОГИЧЕСКАЯ НАХОДКА ПОСЛЕ ПАНКРЕАТОДУОДЕНАЛЬНОЙ РЕЗЕКЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>A RARE HISTOLOGICAL FINDING AFTER PANCREATICODUODENECTOMY</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2406-0000</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Райн</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Rayn</surname><given-names>V. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p> врач-хирург хирургического отделения № 2; врач-онкологконсультативно-диагностической поликлиники</p><p>SPIN-код: 9455-8350</p><p> Россия, 628011, г. Ханты-Мансийск, ул. Мира, 40 </p><p> Россия, 628011, г. Ханты-Мансийск, ул. Калинина, 40 </p></bio><bio xml:lang="en"><p> MD, Surgeon, Surgery Department, № 2 </p><p> 40, Mira Street, 628011, Khanty-Mansiysk, Russia </p><p> 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia </p></bio><email xlink:type="simple">raynvu@okbhmao.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Персидский</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Persidskiy</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> врач-патологоанатом, отделение патологической анатомии</p><p>SPIN-код: 5643-9546 </p><p> Россия, 628011, г. Ханты-Мансийск, ул. Калинина, 40 </p></bio><bio xml:lang="en"><p> MD, Pathologist, Department of Pathology </p><p> 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ионин</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ionin</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p> доктор медицинских наук, профессор, заведующий кафедрой общей и факультетской хирургии </p><p> Россия, 628011, г. Ханты-Мансийск, ул. Мира, 40 </p></bio><bio xml:lang="en"><p> MD, DSc, Professor, Head of Department for General and Faculty Surgery </p><p> 40, Mira Street, 628011, Khanty-Mansiysk, Russia </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>Хадиева</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Khadieva</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p> кандидат медицинских наук, заведующая отделением патологической анатомии </p><p> Россия, 628011, г. Ханты-Мансийск, ул. Калинина, 40 </p></bio><bio xml:lang="en"><p> MD, Phd, Pathologist, Head of Department of Pathology </p><p> 40, Kalinina Street, 628011, Khanty-Mansiysk, Russia </p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">БУ ВО «Ханты-Мансийская государственная медицинская академия»;&#13;
БУ «Окружная клиническая больница»<country>Россия</country></aff><aff xml:lang="en">Khanty-Mansiysk State Medical Academy;&#13;
Clinical Hospital of the Khanty-Mansiysk Autonomous Okrug – Ugra<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">БУ «Окружная клиническая больница»<country>Россия</country></aff><aff xml:lang="en">Clinical Hospital of the Khanty-Mansiysk Autonomous Okrug – Ugra<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">БУ ВО «Ханты-Мансийская государственная медицинская академия»<country>Россия</country></aff><aff xml:lang="en">Khanty-Mansiysk State Medical Academy<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>05</month><year>2021</year></pub-date><volume>20</volume><issue>2</issue><fpage>136</fpage><lpage>140</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Райн В.Ю., Персидский М.А., Ионин В.П., Хадиева Е.Д., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Райн В.Ю., Персидский М.А., Ионин В.П., Хадиева Е.Д.</copyright-holder><copyright-holder xml:lang="en">Rayn V.Y., Persidskiy M.A., Ionin V.P., Khadieva E.D.</copyright-holder><license 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.siboncoj.ru/jour/article/view/1766">https://www.siboncoj.ru/jour/article/view/1766</self-uri><abstract><p>Представлен случай успешного хирургического лечения редкого сочетания трех злокачественных опухолей большого соска двенадцатиперстной кишки у пациентки 59 лет. Клиническая картина при поступлении включала боли в животе, тошноту и рвоту, потерю веса, повышение температуры тела, признаки механической желтухи. После обследования заподозрен рак большого дуоденального сосочка, в связи с чем выполнена пилоросохраняющая панкреатодуоденальная резекция. Послеоперационный период протекал без осложнений, больная выписана из стационара на 17-e сут. По данным гистологического и иммуногистохимического исследования операционного материала в опухоли выявлено одновременное  присутствие клеток умереннодифференцированной аденокарциномы (30 %) с участками мелкоклеточной нейроэндокринной карциномы grade 3 (50 %) и плоскоклеточным ороговевающим раком grade 2 (не более 20 % от объема опухоли) с ростом от слизистой оболочки двенадцатиперстной кишки в головку поджелудочной железы без инвазии её капсулы, края резекции – интактны. Обнаружена экспрессия синаптофизина, хромогранина А и цитокератина 5/6. Размеры опухоли (диаметр – 2 см) и отсутствие признаков локорегионарного распространения позволили стадировать процесс как T2N0M0 стадия II, в связи с чем адъювантное лечение не проводилось. Через 6 мес при КТ-контроле выявлены 2 очага в печени. При биопсии одного из них гистологически и иммуногистохимически верифицирован метастаз нейроэндокринного рака. Проводится химиотерапия первой линии по схеме этопозид + цисплатин.</p></abstract><trans-abstract xml:lang="en"><p>In this paper, we describe the case of successful surgical treatment of a rare combination of three malignant tumors of the major duodenal papilla in one patient. A 59-year-old woman presented with abdominal pain, fever, nausea, vomiting, weight loss and obstructive jaundice. After routine examination, the patient with suspected cancer of the major duodenal papilla underwent pylorus-sparing pancreatoduodenal resection. Final histology revealed a rare collision of three types of cancer in the major duodenal papilla invading the pancreatic head: moderately-differentiated adenocarcinoma (30 %), moderately differentiated squamous cell carcinoma (20 %) and poorly differentiated small cell neuroendocrine cancer (50 %), surgical resection margins were intact. Immunohistochemical analysis revealed positivity for synaptophysin, chromogranin A and cytokeratin 5/6. The tumor diameter of 2 cm and the absence of signs of locoregional spread allowed the process to be staged as T2N0M0, so the patient did not receive any adjuvant treatment. Follow-up CT performed 6 months later showed two lesions in the liver, and biopsy of one of them was performed. Metastasis of neuroendocrine cancer was histologically and immunohistochemically verified. She started first-line chemotherapy with etoposide + cisplatin.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нейроэндокринный рак</kwd><kwd>плоскоклеточный рак большого дуоденального сосочка</kwd><kwd>аденокарцинома БДС</kwd><kwd>пилоросохраняющая панкреатодуоденальная резекция</kwd><kwd>фатерова ампула</kwd></kwd-group><kwd-group xml:lang="en"><kwd>neuroendocrine cancer</kwd><kwd>squamous cell carcinoma of major duodenal papilla</kwd><kwd>adenocarcinoma ampulla of Vater</kwd><kwd>pancreaticoduodenectomy</kwd><kwd>pylorus preserving</kwd><kwd>major duodenal papilla</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">Balci B., Calik B., Karadeniz T., Sahin H., Ugurlu L., Aydin C. Primary squamous cell carcinoma of the ampulla of Vater: a case report. 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