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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">Pharmateca</journal-id><journal-title-group><journal-title xml:lang="en">Pharmateca</journal-title><trans-title-group xml:lang="ru"><trans-title>Фарматека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2073-4034</issn><issn publication-format="electronic">2414-9128</issn><publisher><publisher-name xml:lang="en">Bionika Media</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">717315</article-id><article-id pub-id-type="doi">10.18565/pharmateca.2026.4.210-214</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Obstetrics/gynecology</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Акушерство/гинекология</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">Theca-lutein cysts of the ovaries in the third trimester of pregnancy: a case report</article-title><trans-title-group xml:lang="ru"><trans-title>Текалютеиновые кисты яичников в третьем триместре беременности: случай из практики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-8834-3019</contrib-id><name-alternatives><name xml:lang="en"><surname>Lebedeva</surname><given-names>Natalia V.</given-names></name><name xml:lang="ru"><surname>Лебедева</surname><given-names>Наталья Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Department of Obstetrics and Gynecology, Faculty of Continuous Professional Education</p></bio><bio xml:lang="ru"><p>к.м.н., доцент кафедры акушерства и гинекологии факультета дополнительного профессионального образования</p></bio><email>natali.lebedeva.72@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-1241-7076</contrib-id><name-alternatives><name xml:lang="en"><surname>Guseva</surname><given-names>Olga I.</given-names></name><name xml:lang="ru"><surname>Гусева</surname><given-names>Ольга Игоревна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of Obstetrics and Gynecology, Faculty of Continuous Professional Education</p></bio><bio xml:lang="ru"><p>д.м.н., профессор кафедры акушерства и гинекологии ФДПО</p></bio><email>alise52@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8850-5684</contrib-id><contrib-id contrib-id-type="spin">4490-5591</contrib-id><name-alternatives><name xml:lang="en"><surname>Morozova</surname><given-names>Yulia V.</given-names></name><name xml:lang="ru"><surname>Морозова</surname><given-names>Юлия Валерьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Associate Professor, Department of Obstetrics and Gynecology</p></bio><bio xml:lang="ru"><p>к.м.н., доцент кафедры акушерства и гинекологии</p></bio><email>juliamorozova@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Katkova</surname><given-names>Nadezhda Y.</given-names></name><name xml:lang="ru"><surname>Каткова</surname><given-names>Надежда Юрьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor, Department of Obstetrics and Gynecology, Faculty of Continuous Professional Education</p></bio><bio xml:lang="ru"><p>д.м.н., профессор кафедры акушерства и гинекологии ФДПО</p></bio><email>katkova_nu@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Privolzhsky Research Medical University</institution></aff><aff><institution xml:lang="ru">Приволжский исследовательский медицинский университет</institution></aff></aff-alternatives><content-language>ru</content-language><pub-date date-type="pub" publication-format="electronic" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></pub-date><pub-date date-type="collection"><year>2026</year></pub-date><volume>33</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>210</fpage><lpage>214</lpage><history><date date-type="received" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></date></history><pub-history><event event-type="received"><event-desc>Received:<date date-type="received" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></date></event-desc></event><event event-type="accepted"><event-desc>Accepted:<date date-type="accepted" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></date></event-desc></event><event event-type="pub"><event-desc>Published:<pub-date date-type="pub" publication-format="electronic" iso-8601-date="2026-08-17"><day>17</day><month>08</month><year>2026</year></pub-date></event-desc></event></pub-history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Bionika Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, ООО «Бионика Медиа»</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Bionika Media</copyright-holder><copyright-holder xml:lang="ru">ООО «Бионика Медиа»</copyright-holder><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://journals.eco-vector.com/2073-4034/about/editorialPolicies</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/2073-4034/article/view/717315">https://journals.eco-vector.com/2073-4034/article/view/717315</self-uri><abstract xml:lang="en"><p>Hyperreactio luteinalis is a rare condition characterized by ovarian enlargement due to multiple theca-lutein cysts and likely associated with elevated human chorionic gonadotropin (hCG) levels or an abnormal ovarian response to hCG [1]. Hyperreactio luteinalis is most often seen in conditions with elevated hCG levels, such as trophoblastic disease, multiple pregnancy, or nonimmune hydrops fetalis, but can also occur in normal singleton pregnancies [2]. This article presents a clinical case of large theca-lutein cysts that developed in the third trimester of pregnancy with a favorable outcome. During follow-up until delivery at 37-38 weeks, a progressive increase in the size of the ovarian cysts was noted. A partial resection of both ovaries was performed during a cesarean section. The postoperative period was uneventful, and a follow-up ultrasound two months later revealed complete regression of the theca-lutein cysts.</p></abstract><trans-abstract xml:lang="ru"><p>Hyperreactio luteinalis – редкое состояние, характеризующееся увеличением яичников из-за множественных текалютеиновых кист и, вероятно, связанное с повышенным уровнем хорионического гонадотропина человека (ХГЧ) или аномальной реакцией яичников на ХГЧ [1]. Hyperreactio luteinalis чаще всего встречается при состояниях с повышенным уровнем ХГЧ, таких как трофобластическая болезнь, многоплодная беременность или неиммунная водянка плода, но также может возникать при нормальной одноплодной беременности [2]. В статье представлен клинический случай крупных текалютеиновых кист, развившихся в третьем триместре беременности с благоприятным исходом. При динамическом наблюдении до родоразрешения в 37–38 недель отмечалось прогрессивное увеличение размеров кист яичников. При операции кесарева сечения выполнена частичная резекция обоих яичников. Послеоперационный период протекал без осложнений и через 2 месяца на контрольном ультразвуковом исследовании обнаружен полный регресс текалютеиновых кист.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ovarian theca-lutein cysts</kwd><kwd>corpus luteum hyperreactivity</kwd><kwd>human chorionic gonadotropin</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>текалютеиновые кисты яичников</kwd><kwd>гиперреакция желтого тела</kwd><kwd>хорионический гонадотропин человека</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Malinowski A.K., Sen J., Sermer M. Hyperreactio luteinalis: maternal and fetal effects. J Obstet Gynaecol Can. 2015;37(8):715–723. https://doi:10.1016/S1701-2163(15)30176-6</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Faden M., Salehi A.H., Simon J., et al. Hyperreactio luteinalis in association with multiple foetal malformations – a consequence of supra-physiological HCG? 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