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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">977</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2025-24-1-181-187</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CLINICAL OBSERVATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Thyroid gland ectopia to the ovary resulting in papillary thyroid cancer with carcinomatosis</article-title><trans-title-group xml:lang="ru"><trans-title>Эктопия щитовидной железы в яичник с развитием папиллярного рака с канцероматозом</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Naymushina</surname><given-names>P. A.</given-names></name><name xml:lang="ru"><surname>Наймушина</surname><given-names>П. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Polina A. Naymushuna - a pediatric oncologist at the Department of Adolescent Hematology/Oncology</p><p>1 Samory Mashela St., 117997, Moscow</p></bio><bio xml:lang="ru"><p>Наймушина Полина Андреевна - врач-детский онколог отделения онкологии и гематологии старшего возраста.</p><p>117997, Москва, ул. Саморы Машела, 1</p></bio><email>polina.naymushina1@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shevtsov</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Шевцов</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Uskova</surname><given-names>N. G.</given-names></name><name xml:lang="ru"><surname>Ускова</surname><given-names>Н. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abramov</surname><given-names>D. S.</given-names></name><name xml:lang="ru"><surname>Абрамов</surname><given-names>Д. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7732-8184</contrib-id><name-alternatives><name xml:lang="en"><surname>Konovalov</surname><given-names>D. M.</given-names></name><name xml:lang="ru"><surname>Коновалов</surname><given-names>Д. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Akhaladze</surname><given-names>D. G.</given-names></name><name xml:lang="ru"><surname>Ахаладзе</surname><given-names>Д. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0547-0899</contrib-id><name-alternatives><name xml:lang="en"><surname>Grachev</surname><given-names>N. S.</given-names></name><name xml:lang="ru"><surname>Грачев</surname><given-names>Н. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Moscow</p></bio><bio xml:lang="ru"><p>Москва</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">The Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of the Russian Federation</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-04-08" publication-format="electronic"><day>08</day><month>04</month><year>2025</year></pub-date><volume>24</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>181</fpage><lpage>187</lpage><history><date date-type="received" iso-8601-date="2025-03-28"><day>28</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-03-28"><day>28</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hemoncim.com/jour/article/view/977">https://hemoncim.com/jour/article/view/977</self-uri><abstract xml:lang="en"><p>Thyroid gland ectopia is a rare condition occurring as a developmental anomaly during the embryonic period, when the thyroid primordium migrates. The prevalence of thyroid gland ectopia is 1 per 100 000–300 000 healthy individuals. Struma ovarii is a variant of thyroid gland ectopia, defined by the presence of thyroid tissue in the ovary. Cases of struma ovarii are very rare, and in the pediatric population they are even more rare than in adults. Only a few cases of struma ovarii in patients under 18 years have been described in the literature. Here, we present a clinical case of papillary thyroid cancer in ectopic thyroid tissue in a 13-year-old girl. The patient's parents gave their consent to the use of their child's data, including photographs, for research purposes and in publications. Surgery remains the main treatment option for all histological subtypes of thyroid cancer, however patients with distant metastasis are treated with radioactive iodine therapy. In this case, as adjuvant therapy, the patient received a combination of thyroidectomy and radioactive iodine therapy due to the presence of implantation metastases. Malignant transformation of ectopic thyroid tissue is extremely rare, and it may be difficult for a clinician to determine the best treatment option due to the lack of uniform treatment guidelines for this disease. This case report describes the clinical course of struma ovarii as well as an option for surgical treatment and adjuvant therapy for this disease.</p></abstract><trans-abstract xml:lang="ru"><p>Эктопия щитовидной железы (ЩЖ) – редкое состояние, возникающее как аномалия развития в эмбриональном периоде во время миграции зачатка ЩЖ. Распространенность эктопии ЩЖ составляет 1 случай на каждые 100 000–300 000 здоровых людей. Отдельным вариантом эктопии ЩЖ является струма яичника – развитие ткани ЩЖ в яичнике. Случаи струмы яичника очень редки, и в педиатрической популяции встречаются еще реже, чем у взрослых пациентов. В литературе описано всего несколько случаев развития заболевания у пациентов младше 18 лет. В данной работе приведен клинический случай развития папиллярного рака в эктопированной ткани ЩЖ у девочки 13 лет. Родители пациентки дали согласие на использование информации, в том числе фотографий ребенка, в научных исследованиях и публикациях. Основным методом лечения всех гистологических подтипов рака ЩЖ остается хирургическое вмешательство, однако у пациентов с отдаленными метастазами используется радиойодтерапия. В представленном клиническом случае в качестве адъювантной терапии было выбрано сочетание тиреоидэктомии с радиойодтерапией в связи с наличием имплантационных метастазов. Злокачественная трансформация эктопированной ткани ЩЖ отмечается в исключительных случаях, поэтому сложности для клинициста может вызвать выбор тактики терапии из-за отсутствия единых протоколов лечения данного патологического состояния. Случай, представленный в данной статье, демонстрирует клинические особенности течения заболевания, а также вариант хирургической тактики и адъювантного лечения струмы яичника.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thyroid gland ectopia</kwd><kwd>struma ovarii</kwd><kwd>papillary thyroid cancer</kwd><kwd>carcinomatosis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эктопия щитовидной железы</kwd><kwd>струма яичника</kwd><kwd>папиллярный рак</kwd><kwd>канцероматоз</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Не указан</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kim M.S., Kong Y.H., Lee D.Y. A Case of Subclinical Hypothyroidism with Lingual and Right Pretracheal Ectopic Thyroid. J Clin Res Pediatr Endocrinol 2015; 7 (2): 148–50.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Yoo S.C., Chang K.H., Lyu M.O., Chang S.J., Ryu H.S., Kim H.S. Clinical characteristics of struma ovarii. J Gynecol Oncol 2008; 19: 135–8.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Ciccarelli A., Valdes-Socin H., Parma J., Khoo S.K., Schoumans J., Colao A., et al. Thyrotoxic adenoma followed by atypical hyperthyroidism due to struma ovarii: clinical and genetic studies. Eur J Endocrinol 2004; 150: 431–7.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Robboy S.J., Shaco-Levy R., Peng R.Y., Snyder M.J., Donahue J., Bentley R.C., et al. Malignant struma ovarii: an analysis of 88 cases, including 27 with extraovarian spread. Int J Gynecol Pathol 2009; 28: 405–22.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Young R.H. New and unusual aspects of ovarian germ cell tumors. Am J Surg Pathol 1993; 17 (12): 1210–24.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Rosen R.D., Sapra A. Embryology, thyroid. In: StatPearls Knowledge Base; 2019.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Sauk J.J. Ectopic lingual thyroid. J Pathol 1970; 102: 239–45.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Zalel Y., Seidman D.S., Oren M., Achiron R., Gotlieb W., Mashiach S., Goldenberg M. Sonographic and clinical characteristics of struma ovarii. J Ultrasound Med 2000; 19: 857–61.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Ibrahim N.A., Fadeyibi I.O. Ectopic thyroid: etiology, pathology and management. Hormones 2011; 10: 261–9.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>De Felice M., Di Lauro R. Thyroid development and its disorders: genetics and molecular mechanisms. Endocr Rev 2004; 25 (5): 722–46.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Moayerifar M., Koohmanaee S., Nakhochari A.M., Rad A.H., Dalili S. Malignant struma ovarii in an 11-year-old girl. J Pediatr Surg Case Rep 2018; 29: 1–4.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Ezon I., Zilbert N., Pinkney L., Wei J.-J., Malik R., Nadler E.P. A large struma ovarii tumor removed via laparoscopy in a 16-year-old adolescent. J Pediatr Surg 2007; 42 (8): e19–22.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Makani S., Kim W., Gaba A.R. Struma Ovarii with a focus of papillary thyroid cancer: a case report and review of the literature. Gynecol Oncol 2004; 94 (3): 835–9.</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Iltar E., Ureyen I., Toptas T., Savas M., Çekiç S., Uysal A. A Rare Case: Struma Ovarii in a 14-YearOld Girl. J Adolesc Young Adult Oncol 2018; 7 (1): 134–6.</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Alamdari M.I., Habibzadeh A., Pakrouy H., Chaichi P., Sheidaei S. An unusual presentation of a papillary thyroid carcinoma in the struma ovarii in a 10 year-old girl: A case report. Int J Surg Case Rep 2018; 51: 218–20.</mixed-citation></ref><ref id="B16"><label>16.</label><citation-alternatives><mixed-citation xml:lang="en">Bolotina L.V., Vladimirova L.Yu., Dengina N.V., Novik A.V., Romanov I.S. Practical guidelines for the treatment of malignant head and neck tumors. Malignant tumors 2021; 11 (3s2-1): 91–106. (In Russ.)].</mixed-citation><mixed-citation xml:lang="ru">Болотина Л.В., Владимирова Л.Ю., Деньгина Н.В., Новик А.В., Романов И.С. Практические рекомендации по лечению злокачественных опухолей головы и шеи. Злокачественные опухоли 2021; 11 (3s2-1): 91–106. DOI: 10.18027/2224-5057-2021-11-3s2-06</mixed-citation></citation-alternatives></ref><ref id="B17"><label>17.</label><citation-alternatives><mixed-citation xml:lang="en">Rumyantsev A.G., Varfolomeeva S.R., Grachev N.S., Karachunsky A.I., Novichkova G.A. Principles and Tools of Evidence-Based Medicine in Pediatric Hematology/Oncology Doctor.Ru 2015; 10 (111): 6–13. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Румянцев А.Г., Варфоломеева С.Р., Грачев Н.С., Карачунский А.И., Новичкова Г.А. Принципы и инструменты доказательной медицины в детской гематологии/онкологии. Доктор. Ру 2015; 10 (111): 6–13.</mixed-citation></citation-alternatives></ref><ref id="B18"><label>18.</label><mixed-citation>Ayhan S., Kilic F., Ersak B., Aytekin O., Akar S., Turkmen O., et al. Malignant struma ovarii: From case to analysis. J Obstet Gynaecol Res 2021; 47 (9): 3339–51.</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Hinshaw H.D., Smith A.L., Desouki M.M., Olawaiye A.B. Malignant transformation of a mature cystic ovarian teratoma into thyroid carcinoma, mucinous adenocarcinoma, and strumal carcinoid: a case report and literature review. Case Rep Obstet Gynecol 2012; 2012: 269489.</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Egan C., Stefanova D., Thiesmeyer J.W., Joo Lee Y., Greenberg J., Beninato T., et al. Proposed risk stratification and patterns of radioactive iodine therapy in malignant struma ovarii. Thyroid 2022; 32 (9): 1101–8.</mixed-citation></ref></ref-list></back></article>
