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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">508786</article-id><article-id pub-id-type="doi">10.17816/DD508786</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">“Rice bodies” symptoms on magnetic resonance imaging of the shoulder in a patient with rheumatoid arthritis</article-title><trans-title-group xml:lang="ru"><trans-title>Симптом «рисовых телец» при магнитно-резонансной томографии плечевого сустава у пациентки с ревматоидным артритом</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>类风湿性关节炎患者肩关节磁共振成像上的米粒体症状</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4726-0806</contrib-id><contrib-id contrib-id-type="spin">9695-3717</contrib-id><name-alternatives><name xml:lang="en"><surname>Ageeva</surname><given-names>Sofia F.</given-names></name><name xml:lang="ru"><surname>Агеева</surname><given-names>София Фаильевна</given-names></name><name xml:lang="zh"><surname>Ageeva</surname><given-names>Sofia F.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>son.ageeva13@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0894-1994</contrib-id><contrib-id contrib-id-type="spin">2665-5973</contrib-id><name-alternatives><name xml:lang="en"><surname>Filatova</surname><given-names>Daria A.</given-names></name><name xml:lang="ru"><surname>Филатова</surname><given-names>Дарья Андреевна</given-names></name><name xml:lang="zh"><surname>Filatova</surname><given-names>Daria A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>dariafilatova.msu@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1266-4926</contrib-id><contrib-id contrib-id-type="spin">6897-9641</contrib-id><name-alternatives><name xml:lang="en"><surname>Mershina</surname><given-names>Elena A.</given-names></name><name xml:lang="ru"><surname>Мершина</surname><given-names>Елена Александровна</given-names></name><name xml:lang="zh"><surname>Mershina</surname><given-names>Elena A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med.), Аssistant professor</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Med.), Аssistant professor</p></bio><email>elena_mershina@mail.ru</email><xref ref-type="aff" rid="aff1"/></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 Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Med.), Professor</p></bio><email>vsini@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><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><pub-date date-type="preprint" iso-8601-date="2023-09-14" publication-format="electronic"><day>14</day><month>09</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>4</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>616</fpage><lpage>624</lpage><history><date date-type="received" iso-8601-date="2023-06-26"><day>26</day><month>06</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-09-05"><day>05</day><month>09</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Эко-вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2023, Eco-Vector</copyright-statement><copyright-year>2023</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/508786">https://jdigitaldiagnostics.com/DD/article/view/508786</self-uri><abstract xml:lang="en"><p>The “rice bodies” symptom on magnetic resonance imaging of the shoulder joint in patients with rheumatoid arthritis is a rare but specific finding characterized by the presence of multiple small, round, rice-grain-like structures in the synovial fluid of the joint, synovial pouches, or sheaths. The etiology of the “rice bodies” is still not fully understood. They are suggested as the result of microinfarcts of the synovial membrane in patients with rheumatoid arthritis or other inflammatory joint diseases. Clinically, the “rice bodies” symptom may cause pain, but not in every case. Among radiological diagnostic methods, magnetic resonance imaging is the leading method for the detection of rice bodies. This article presents a clinical case of “rice bodies” symptoms diagnosed by magnetic resonance imaging in a patient with a long history of rheumatoid arthritis who presented with a painless enlargement in the left shoulder. Computed tomography and magnetic resonance imaging of the left shoulder could detect “rice bodies” as a manifestation of an underlying disease and determine further treatment techniques.</p></abstract><trans-abstract xml:lang="ru"><p>Симптом «рисовых телец» при магнитно-резонансной томографии плечевого сустава у пациентов с ревматоидным артритом — редкая, но специфическая находка, характеризующаяся наличием в синовиальной жидкости сустава, синовиальных сумках или влагалищах множественных мелких округлых структур, схожих друг с другом, похожих на зёрнышки риса. Этиология «рисовых телец» до сих пор окончательно не ясна. Предполагается, что они образуются в результате микроинфарктов синовиальной оболочки у пациентов с ревматоидным артритом или некоторыми другими воспалительными заболеваниями суставов. Клинически наличие «рисовых телец» может вызывать у пациента болевой синдром, однако так происходит не всегда. Среди методов лучевой диагностики ведущей ролью для выявления «рисовых телец» обладает магнитно-резонансная томография.</p> <p>В данной статье представлено описание клинического случая выявления этого симптома при магнитно-резонансной томографии плечевого сустава у пациентки с длительным анамнезом ревматоидного артрита, обратившейся в связи с безболезненным увеличением в объёме левого плеча. Выполненные исследования (компьютерная томография и магнитно-резонансная томография левого плечевого сустава) позволили обнаружить симптом «рисовых телец» как проявление основного заболевания и определить дальнейшую тактику лечения.</p></trans-abstract><trans-abstract xml:lang="zh"><p>类风湿性关节炎患者肩关节磁共振成像（MRI）上的米粒体症状是一种罕见但特殊的发现。其特征是关节滑液、滑膜囊或滑膜鞘中出现多个圆形小结构。这些结构彼此相似，就像米粒一样。米粒体的成因至今不明。据推测，米粒体是因类风湿性关节炎或其他炎症性关节疾病患者滑膜微梗塞而形成的。在临床上，米粒体的存在可能会使患者感到疼痛。然而，情况并非总是如此。在放射诊断方法中，磁共振成像在检测米粒体方面发挥着主导作用。</p> <p>本文介绍一例在肩关节磁共振成像中发现该症状的临床病例。该症状是在一名有长期类风湿性关节炎病史的患者身上发现的。患者因左肩部无痛性增大而就医。对左肩关节进行了电子计算机断层扫描（CT）和磁共振成像检查。医生通过这些检查发现了，米粒体症状是基础疾病的一种表现形式。这些检查有助于确定进一步的治疗策略。</p></trans-abstract><kwd-group xml:lang="en"><kwd>rheumatoid arthritis</kwd><kwd>shoulder joint</kwd><kwd>rice bodies</kwd><kwd>magnetic resonance imaging</kwd><kwd>computed tomography</kwd><kwd>case report</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ревматоидный артрит</kwd><kwd>плечевой сустав</kwd><kwd>рисовые тельца</kwd><kwd>магнитно-резонансная томография</kwd><kwd>компьютерная томография</kwd><kwd>клинический случай</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>类风湿性关节炎</kwd><kwd>肩关节</kwd><kwd>米粒体</kwd><kwd>磁共振成像</kwd><kwd>电子计算机断层扫描</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><citation-alternatives><mixed-citation xml:lang="en">Nasonov EL, Karateev DE, Balabanova RM. 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