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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Digital Diagnostics</journal-id><journal-title-group><journal-title xml:lang="en">Digital Diagnostics</journal-title><trans-title-group xml:lang="ru"><trans-title>Digital Diagnostics</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>Digital Diagnostics</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2712-8490</issn><issn publication-format="electronic">2712-8962</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">677782</article-id><article-id pub-id-type="doi">10.17816/DD677782</article-id><article-id pub-id-type="edn">MOICBF</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Case reports</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинические случаи и серии клинических случаев</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>临床病例及临床病例的系列</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Nonbacterial thrombotic endocarditis of the tricuspid valve with recurrent pulmonary embolism in a patient with pancreatic adenocarcinoma: a case report</article-title><trans-title-group xml:lang="ru"><trans-title>Небактериальный тромботический эндокардит трёхстворчатого клапана с повторными эпизодами эмболии лёгочной артерии у пациентки с аденокарциномой поджелудочной железы: клинический случай</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>胰腺腺癌患者三尖瓣非细菌性血栓性心内膜炎并反复肺动脉栓塞：临床病例</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-3327-009X</contrib-id><name-alternatives><name xml:lang="en"><surname>Dalgatova</surname><given-names>Kira S.</given-names></name><name xml:lang="ru"><surname>Далгатова</surname><given-names>Кира Сергеевна</given-names></name><name xml:lang="zh"><surname>Dalgatova</surname><given-names>Kira S.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>kira_1975@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-6948-8183</contrib-id><name-alternatives><name xml:lang="en"><surname>Alaniya</surname><given-names>Mariya K.</given-names></name><name xml:lang="ru"><surname>Алания</surname><given-names>Мария Карамановна</given-names></name><name xml:lang="zh"><surname>Alaniya</surname><given-names>Mariya K.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>malaniya17@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8214-9826</contrib-id><contrib-id contrib-id-type="spin">9234-2015</contrib-id><name-alternatives><name xml:lang="en"><surname>Fedorov</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Фёдоров</surname><given-names>Сергей Александрович</given-names></name><name xml:lang="zh"><surname>Fedorov</surname><given-names>Sergey A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Medicine)</p></bio><email>serhiofedorucci@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0607-2673</contrib-id><contrib-id contrib-id-type="spin">4697-0822</contrib-id><name-alternatives><name xml:lang="en"><surname>Erlikh</surname><given-names>Alexey D.</given-names></name><name xml:lang="ru"><surname>Эрлих</surname><given-names>Алексей Дмитриевич</given-names></name><name xml:lang="zh"><surname>Erlikh</surname><given-names>Alexey D.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine)</p></bio><email>alexeyerlikh@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2401-5007</contrib-id><contrib-id contrib-id-type="spin">6182-0840</contrib-id><name-alternatives><name xml:lang="en"><surname>Bliznyukov</surname><given-names>Oleg P.</given-names></name><name xml:lang="ru"><surname>Близнюков</surname><given-names>Олег Петрович</given-names></name><name xml:lang="zh"><surname>Bliznyukov</surname><given-names>Oleg P.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine)</p></bio><email>opblisnukov@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5649-2193</contrib-id><contrib-id contrib-id-type="spin">8449-6590</contrib-id><name-alternatives><name xml:lang="en"><surname>Sinitsyn</surname><given-names>Valentin E.</given-names></name><name xml:lang="ru"><surname>Синицын</surname><given-names>Валентин Евгеньевич</given-names></name><name xml:lang="zh"><surname>Sinitsyn</surname><given-names>Valentin E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><email>vsini@mail.ru</email><xref ref-type="aff" rid="aff4"/><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Olymp Clinic Mars</institution></aff><aff><institution xml:lang="ru">Олимп Клиник Марс</institution></aff><aff><institution xml:lang="zh">Olymp Clinic Mars</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Ilinskiy Hospital</institution></aff><aff><institution xml:lang="ru">Ильинская больница</institution></aff><aff><institution xml:lang="zh">Ilinskiy Hospital</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian Scientific Center of Roentgenology and Radiology</institution></aff><aff><institution xml:lang="ru">Российский научный центр рентгенорадиологии</institution></aff><aff><institution xml:lang="zh">Russian Scientific Center of Roentgenology and Radiology</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution></aff><aff><institution xml:lang="zh">Lomonosov Moscow State University</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies</institution></aff><aff><institution xml:lang="ru">Научно-практический клинический центр диагностики и телемедицинских технологий</institution></aff><aff><institution xml:lang="zh">Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-12-13" publication-format="electronic"><day>13</day><month>12</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-12-29" publication-format="electronic"><day>29</day><month>12</month><year>2025</year></pub-date><volume>6</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>630</fpage><lpage>638</lpage><history><date date-type="received" iso-8601-date="2025-03-27"><day>27</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-15"><day>15</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-вектор</copyright-holder><copyright-holder xml:lang="zh">Eco-Vector</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-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://jdigitaldiagnostics.com/DD/article/view/677782">https://jdigitaldiagnostics.com/DD/article/view/677782</self-uri><abstract xml:lang="en"><p>Nonbacterial thrombotic endocarditis is a rare condition that is typically asymptomatic and is most often diagnosed post mortem in patients with cancer, systemic lupus erythematosus, or antiphospholipid syndrome. In this condition, vegetations are predominantly localized in the left heart. In contrast, isolated involvement of the tricuspid valve in nonbacterial thrombotic endocarditis is extremely rare, and the the incidence of this localization has not been established.</p> <p>This article presents a clinical case of nonbacterial thrombotic endocarditis in a patient with pancreatic cancer and liver metastases, characterized by a rare variant of isolated tricuspid valve involvement and manifested by recurrent episodes of pulmonary embolism despite ongoing anticoagulant therapy.</p> <p>The complexity of this case was due to recurrent pulmonary embolism following any attempt of even short-term discontinuation of anticoagulant therapy. At the same time, withdrawal of anticoagulation was a mandatory prerequisite for the safe biopsy of a metastatic lesion and subsequent histological verification, without which adequate antitumor therapy could not be initiated.</p> <p>Given the limited amount of available data on the management of such patients, the therapeutic approach requires individualization and nonstandard clinical decision-making by the treating physician.</p></abstract><trans-abstract xml:lang="ru"><p>Небактериальный тромботический эндокардит — редкое заболевание, протекающее, как правило, бессимптомно и диагностируемое зачастую посмертно у пациентов со злокачественными новообразованиями, системной красной волчанкой, а также c антифосфолипидным синдромом. Вегетации при данной патологии преимущественно локализуются в левых камерах сердца. В свою очередь, изолированное поражение трёхстворчатого клапана при небактериальном тромботическом эндокардите наблюдают крайне редко, а точная частота встречаемости такой локализации не установлена.</p> <p>В данной статье представлен клинический случай небактериального эндокардита у пациентки с раком поджелудочной железы и метастазами в печени, сопровождавшийся редким вариантом изолированного поражения трёхстворчатого клапана и проявлявшийся повторными эпизодами тромбоэмболии лёгочной артерии, несмотря на проведение антикоагулянтной терапии.</p> <p>Сложность представленного случая обусловлена рецидивами тромбоэмболии лёгочной артерии при любой попытке кратковременного прекращения антикоагулянтной терапии. В свою очередь, её отмена — обязательное условие для безопасного выполнения биопсии одного из метастатических очагов и последующей гистологической верификации, без которой невозможно назначить адекватную противоопухолевую терапию.</p> <p>Учитывая ограниченный объём доступной информации о ведении данных пациентов, подход к терапии требует персонализации и нестандартных решений со стороны лечащего врача.</p></trans-abstract><trans-abstract xml:lang="zh"><p>非细菌性血栓性心内膜炎是一种罕见疾病，通常呈无症状经过，且多在合并恶性肿瘤、系统性红斑狼疮或抗磷脂综合征患者的尸检中被发现。该病的心内膜赘生物主要累及左心系统。相对而言，非细菌性血栓性心内膜炎中三尖瓣的孤立性受累极为罕见，其该部位受累的发生频率尚未明确。</p> <p>本文报道了一例胰腺腺癌并肝转移患者的非细菌性血栓性心内膜炎病例，其特点为三尖瓣的罕见孤立性受累，并在接受抗凝治疗的情况下仍反复发生肺动脉血栓栓塞。</p> <p>本病例的诊疗难点在于：每次尝试短暂停止抗凝治疗时，均出现肺动脉血栓栓塞复发。而抗凝治疗的暂停又是安全实施转移灶活检并进行后续组织学验证的必要条件，缺乏病理学确认则无法启动充分的抗肿瘤治疗。</p> <p>鉴于目前关于此类患者管理策略的文献资料极为有限，其治疗方案的制定需要高度个体化，并要求临床医生采取非标准化的决策。</p></trans-abstract><kwd-group xml:lang="en"><kwd>nonbacterial thrombotic endocarditis</kwd><kwd>marantic endocarditis</kwd><kwd>verrucous endocarditis</kwd><kwd>Libman–Sacks endocarditis</kwd><kwd>case report</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>небактериальный тромботический эндокардит</kwd><kwd>марантический эндокардит</kwd><kwd>бородавчатый эндокардит</kwd><kwd>эндокардит Либмана–Сакса</kwd><kwd>клинический случай</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>非细菌性血栓性心内膜炎</kwd><kwd>恶液质性心内膜炎</kwd><kwd>疣状心内膜炎</kwd><kwd>Libman–Sacks 心内膜炎</kwd><kwd>临床病例</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>González Quintela A, Candela MJ, Vidal C, et al. 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