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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">322846</article-id><article-id pub-id-type="doi">10.17816/DD322846</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">Radiation methods in the diagnosis of primary and recurrent malignant ovarian struma: A case report</article-title><trans-title-group xml:lang="ru"><trans-title>Лучевые методы в диагностике первичной и рецидивной злокачественной струмы яичников: клинический случай</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>放射治疗方法在原发性和复发性恶性卵巢甲状腺肿诊断中的应用：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/0000-0001-5994-0468</contrib-id><contrib-id contrib-id-type="spin">3018-2527</contrib-id><name-alternatives><name xml:lang="en"><surname>Nudnov</surname><given-names>Nikolai V.</given-names></name><name xml:lang="ru"><surname>Нуднов</surname><given-names>Николай Васильевич</given-names></name><name xml:lang="zh"><surname>Nudnov</surname><given-names>Nikolai V.</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>nvnudnov@rncrr.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9287-2636</contrib-id><contrib-id contrib-id-type="spin">7829-2899</contrib-id><name-alternatives><name xml:lang="en"><surname>Ivashina</surname><given-names>Svetlana  V.</given-names></name><name xml:lang="ru"><surname>Ивашина</surname><given-names>Светлана Вячеславовна</given-names></name><name xml:lang="zh"><surname>Ivashina</surname><given-names>Svetlana  V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med), Senior Research Associate</p></bio><bio xml:lang="ru"><p>к.м.н., ст. науч. сотр.</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Med), Senior Research Associate</p></bio><email>s.ivashina@bk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2552-5754</contrib-id><contrib-id contrib-id-type="spin">4858-4627</contrib-id><name-alternatives><name xml:lang="en"><surname>Aksenova</surname><given-names>Svetlana  P.</given-names></name><name xml:lang="ru"><surname>Аксенова</surname><given-names>Светлана Павловна</given-names></name><name xml:lang="zh"><surname>Aksenova</surname><given-names>Svetlana  P.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Med), Research Associate</p></bio><bio xml:lang="ru"><p>к.м.н., науч. сотр.</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Med), Research Associate</p></bio><email>fabella@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Russian Scientific Center of Roentgenoradiology</institution></aff><aff><institution xml:lang="ru">Российский научный центр рентгенорадиологии</institution></aff><aff><institution xml:lang="zh">Russian Scientific Center of Roentgenoradiology</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2023-05-31" publication-format="electronic"><day>31</day><month>05</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-07-12" publication-format="electronic"><day>12</day><month>07</month><year>2023</year></pub-date><volume>4</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>214</fpage><lpage>225</lpage><history><date date-type="received" iso-8601-date="2023-04-12"><day>12</day><month>04</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-05-16"><day>16</day><month>05</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/322846">https://jdigitaldiagnostics.com/DD/article/view/322846</self-uri><abstract xml:lang="en"><p>We provide a rare clinical and diagnostic observation of primary and recurring malignant ovarian struma.</p> <p>Malignant struma of the right ovary was detected 2 years after surgical treatment of primary benign struma of the left ovary. Six months later, the patient was diagnosed with a disease relapse, visualized exclusively according to radioisotope research methods. In the fourth year of anticancer treatment, ultrasonography revealed recurring foci along the peritoneum. According to the ultrasound data on the pelvic peritoneum and the projection of the removed right ovary, multiple solid nodes with high blood flow were visualized. Peak systolic velocity ranged from 2 to 9 cm/s in minor lesions from 4 to 12 mm, with an RI max of 0.53. For 4 years, the patient underwent radioiodine therapy with <sup>131</sup>I with an activity of 6.0 GBq; the patient’s condition during the treatment was satisfactory.</p></abstract><trans-abstract xml:lang="ru"><p>Представлено редкое клинико-диагностическое наблюдение первичной и рецидивной злокачественной струмы яичников.</p> <p>Злокачественная струма правого яичника выявлена через 2 года после хирургического лечения первичной доброкачественной струмы левого яичника. Спустя полгода у пациентки выявлен рецидив заболевания, визуализируемый исключительно по данным радиоизотопных методов исследования. Визуализация рецидивных очагов по брюшине на ультразвуковом исследовании была отмечена на четвёртом году противоопухолевого лечения. По данным ультразвукового исследования, по брюшине малого таза на всём протяжении визуализировались множественные солидные опухолевые очаги изо-гипоэхогенной структуры с наличием локусов низко- и умеренно скоростного кровотока даже в мелких очагах: скорость кровотока (peak systolic velocity, PS) была в диапазоне от 2 до 9 см/сек, максимальный индекс сосудистого сопротивления (resistivity index, RI max) ― 0,53. На протяжении 4 лет пациентке проводилась радиойодтерапия <sup>131</sup>I активностью 6,0 ГБк. Состояние пациентки на фоне проводимого лечения удовлетворительное.</p></trans-abstract><trans-abstract xml:lang="zh"><p>本文介绍了一个罕见的原发性和复发性恶性卵巢甲状腺肿的临床诊断观察。</p> <p>右侧卵巢的恶性甲状腺肿是在左侧卵巢的原发性良性甲状腺肿手术治疗2年后发现的。6 个月后，患者出现了只有放射性同位素技术数据才能观察到的疾病复发。在抗肿瘤治疗的第四年，超声检查发现了复发的腹膜病灶。根据超声检查，在全体盆腔腹膜上可以看到多个等渗及低回声结构的实体肿瘤病灶，存在低到中等速度的血流病灶，即使是小病灶：血流速度（peak systolic velocity，PS）在2到9cm/s之间，最大血管阻力指数（resistivity index，RI max）为0.53。患者曾接受放射性碘治疗<sup>131</sup>I，活性为6.0GBq，治疗了4年。在治疗的背景下，患者的情况是令人满意的。</p></trans-abstract><kwd-group xml:lang="en"><kwd>3D angiography</kwd><kwd>magnetic resonance imaging</kwd><kwd>malignant struma ovarii</kwd><kwd>peritoneal strumosis</kwd><kwd>power Doppler mapping</kwd><kwd>relapse</kwd><kwd>ultrasound</kwd><kwd>ultrasound tomography</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ультразвуковое исследование</kwd><kwd>трёхмерная ангиография</kwd><kwd>ультразвуковая томография</kwd><kwd>энергетическое допплеровское картирование</kwd><kwd>МРТ</kwd><kwd>рецидив</kwd><kwd>злокачественная струма яичника</kwd><kwd>перитонеальный струмоз</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>超声检查</kwd><kwd>三维血管造影</kwd><kwd>超声层析成像</kwd><kwd>能量多普勒成像</kwd><kwd>MRI</kwd><kwd>复发</kwd><kwd>恶性卵巢甲状腺肿</kwd><kwd>腹膜甲状腺肿</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">Female Genital Tumours. 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