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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">rpmj</journal-id><journal-title-group><journal-title xml:lang="ru">Research'n Practical Medicine Journal</journal-title><trans-title-group xml:lang="en"><trans-title>Research and Practical Medicine Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2410-1893</issn><publisher><publisher-name>"QUASAR", LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17709/2410-1893-2022-9-2-10</article-id><article-id custom-type="elpub" pub-id-type="custom">rpmj-649</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Клиническое наблюдение</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Clinical Case Reports</subject></subj-group></article-categories><title-group><article-title>Проблема редких опухолей в гинекологии: клинический случай доброкачественной забрюшинной склерозирующей пекомы малого таза у женщины 49 лет</article-title><trans-title-group xml:lang="en"><trans-title>The problem of rare tumors in gynecology: a clinical case of benign retroperitoneal sclerosing pelvic pecoma in 49-year-old woman</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2997-9086</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ланчинский</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Lanchinsky</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ланчинский Виктор Иванович – доцент кафедры акушерства и гинекологии № 1 Института клинической медицины имени Н. В. Склифосовского. AuthorID: 206143</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Victor I. Lanchinsky – associate professor of the department of obstetrics and gynecology No. 1 named after N. V. Sklifosovsky Institute of Clinical Medicine. AuthorID: 206143</p><p>Moscow</p></bio><email xlink:type="simple">lanchvik@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8125-1829</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чушков</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chushkov</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чушков Юрий Васильевич – доцент кафедры акушерства и гинекологии № 1 Института клинической медицины им. Н. В. Склифосовского. SPIN: 6066-9273, AuthorID: 908350, ResearcherID: AAJ-9276-2021</p><p>119991, г. Москва, ул. Трубецкая, д. 8, стр. 2</p></bio><bio xml:lang="en"><p>Yury V. Chushkov – associate professor of the department of obstetrics and gynecology No. 1 named after N.V. Sklifosovsky Institute of Clinical Medicine. SPIN: 6066-9273, AuthorID: 908350, ResearcherID: AAJ-9276-2021</p><p>8/2 Trubetskaya str., Moscow 119991</p></bio><email xlink:type="simple">obstetrics-gynecology@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4242-5723</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пономарев</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Ponomarev</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пономарев Андрей Борисович – доцент кафедры патологической анатомии имени академика А. И. Струкова. AuthorID: 202700</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Andrey B. Ponomarev – associate professor of the department of pathological anatomy named after Academician A. I. Strukov. AuthorID: 202700</p><p>Moscow</p></bio><email xlink:type="simple">enpab19@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7269-4190</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Османов</surname><given-names>Ю. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Osmanov</surname><given-names>Yu. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Османов Юсиф Исламович – доцент кафедры патологической анатомии имени академика А. И. Струкова. SPIN: 4998-9564, AuthorID: 1084766</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Yuseef I. Osmanov – associate professor of the department of pathological anatomy named after Academician A. I. Strukov. SPIN: 4998-9564, AuthorID: 1084766</p><p>Moscow</p></bio><email xlink:type="simple">osmanovyouseef@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5733-953X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ищенко</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ishchenko</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ищенко Анатолий Иванович – профессор, заведующий кафедрой акушерства и гинекологии № 1 Института клинической медицины им. Н. В. Склифосовского. SPIN: 3294-3251, AuthorID: 333464</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Anatoliy I. Ishchenko – professor of the department of obstetrics and gynecology No. 1 named after N. V. Sklifosovsky Institute of Clinical Medicine. SPIN: 3294-3251, AuthorID: 333464</p><p>Moscow</p></bio><email xlink:type="simple">7205502@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3285-5559</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воробьев</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobev</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Воробьев Николай Владимирович – заведующий отделением, врач-уролог Урологического отделения с химиотерапией Отдела опухолей репродуктивных и мочевыводящих органов. SPIN: 3426-9843, AuthorID: 195018</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Nikolai V. Vorobev – head of the department, urologist at the urological department with chemotherapy courses at the department of tumors of the reproductive and urinary organs. SPIN: 3426-9843, AuthorID: 195018</p><p>Moscow</p></bio><email xlink:type="simple">dr.vorobyev@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Первый МГМУ им. И. М. Сеченова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I. M. Sechenov First Moscow State Medical University (Sechenov University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>МНИОИ им. П. А. Герцена – филиал ФГБУ «НМИЦ радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P. A. Hertsen Moscow Oncology Research Institute – Branch of the National Medical Research Radiological Centre</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>04</day><month>05</month><year>2022</year></pub-date><volume>9</volume><issue>2</issue><fpage>113</fpage><lpage>124</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ланчинский В.И., Чушков Ю.В., Пономарев А.Б., Османов Ю.И., Ищенко А.И., Воробьев Н.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ланчинский В.И., Чушков Ю.В., Пономарев А.Б., Османов Ю.И., Ищенко А.И., Воробьев Н.В.</copyright-holder><copyright-holder xml:lang="en">Lanchinsky V.I., Chushkov Y.V., Ponomarev A.B., Osmanov Y.I., Ishchenko A.I., Vorobev N.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.rpmj.ru/rpmj/article/view/649">https://www.rpmj.ru/rpmj/article/view/649</self-uri><abstract><p>В настоящее время опухолевое поражение органов репродуктивной системы занимает ведущее место в структуре гинекологических заболеваний. Одной из редких опухолей, которая может поражать органы репродуктивной системы, является пэкома – опухоль мезенхимального происхождения. Именно из‑за своей редкой встречаемости врачи‑гинекологи зачастую неправильно интерпретируют клинические данные и результаты обследования больных, расценивая опухоль как миому до получения результатов гистологического исследования. В статье описан клинический случай пациентки, которой был поставлен предварительный диагноз миома матки, в связи с чем было проведено плановое оперативное лечение. Однако во время операции была выявлена забрюшинная опухоль, исходящая из маточной вены. Проведенное в дальнейшем гистологическое и иммуногистохимическое исследования позволили установить диагноз склерозирующей пэкомы. В статье анализируются клинические особенности течения заболевания у пациентки, а также имеющиеся результаты инструментальных методов обследования, которые могли свидетельствовать о наличии пэкомы, а также отмечаются трудные вопросы постановки диагноза и тактика диагностического поиска.</p><p>Приводятся данные литературы о частоте выявления пэком, особенностях их структуры. Также отмечается возможность их локализации в различных органах, например, легких, печени, почек, а также мягких тканей. Подчеркивается возможность множественных поражений – пэкоматоза. Отмечается, что среди органов малого таза матка поражается наиболее часто, однако помимо нее в патологический процесс могут быть вовлечены лимфатические узлы таза, широкая связка матки, большой сальник, брюшина малого таза и стенка прямой кишки. Отдельно рассматривается вопрос о риске озлокачествления пэком, выделяется наличие трех видов пэком, что существенно влияет на вероятность рецидива заболевания после оперативного удаления, соответственно и тактику послеоперационного наблюдения.</p></abstract><trans-abstract xml:lang="en"><p>The tumor lesions of the reproductive system organs carry the leading position in the structure of gynecological diseases. One of the rare tumors that can affect the organs of the reproductive system is pecoma, which is a tumor of mesenchymal origin. Because of it’s rare occurrence the gynecologists often misinterpret available clinical data and the results of patient`s examination, diagnosing and treating the tumor as a myoma before having received the results of the histological examination. Our article describes a clinical case of a patient who had a preliminary diagnosis of uterine fibroids, and because of this fact the planned surgical treatment was carried out. But a retroperitoneal tumor originating from the uterine vein was detected during the surgery. The diagnosis of sclerosing pecoma was established by histological and immunohistochemical studies. The article analyzes the clinical features of the patient`s disease, as well as the available results of instrumental methods of examination which can lead to final diagnosis of pecoma, also difficult issues of diagnosis and tactics of diagnostic search are noted.</p><p>The literature data on the frequency of detection of pecomas, the features of their structure are presented. It is marked, that there is also a possibility of pecoma`s localization in various organs, for example, lungs, liver, kidneys, as well as in soft tissues. The possibility of multiple lesions – pecomatosis is emphasized. It is noted that among the pelvic organs the uterus is affected most often, but furthermore, the pelvic lymph nodes, the broad ligament, the omentum, the peritoneum of the pelvis and the rectum wall can be also involved in the pathological process. Risk factor of pecomas malignancy is discussed separately, the presence of three types of pecomas is determined. This fact significantly effects the probability of relapse of the tumor after surgical removal and, respectively, the tactics of postoperative follow‑up of such patients.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оперативная гинекология</kwd><kwd>онкология</kwd><kwd>пэкома</kwd><kwd>диагностика пэком малого таза</kwd><kwd>оперативное лечение пэком малого таза</kwd><kwd>опухоль малого таза</kwd><kwd>забрюшинная опухоль</kwd><kwd>мезенхимальная опухоль</kwd></kwd-group><kwd-group xml:lang="en"><kwd>operative gynecology</kwd><kwd>oncology</kwd><kwd>pecoma</kwd><kwd>diagnosis of pelvic pecoma</kwd><kwd>surgical treatment of pelvic pecomas</kwd><kwd>pelvic tumor</kwd><kwd>retroperitoneal tumor</kwd><kwd>mesenchymal tumor</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Ищенко А. И., Ботвин М. А., Ланчинский В. И. Миома матки. 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