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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">Morphology</journal-id><journal-title-group><journal-title xml:lang="en">Morphology</journal-title><trans-title-group xml:lang="ru"><trans-title>Морфология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1026-3543</issn><issn publication-format="electronic">2949-2556</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">110835</article-id><article-id pub-id-type="doi">10.17816/morph.110835</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Patterns of topographic and anatomical relations of the uterus and rectum <italic>in vivo</italic></article-title><trans-title-group xml:lang="ru"><trans-title>Закономерности прижизненных топографо-анатомических взаимоотношений матки и прямой кишки</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1350-5094</contrib-id><contrib-id contrib-id-type="spin">9266-7531</contrib-id><name-alternatives><name xml:lang="en"><surname>Smelov</surname><given-names>Sergey V.</given-names></name><name xml:lang="ru"><surname>Смелов</surname><given-names>Сергей Владимирович</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.м.н., профессор</p></bio><email>sv-smel@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7093-1722</contrib-id><name-alternatives><name xml:lang="en"><surname>Shalimov</surname><given-names>Evgeny S.</given-names></name><name xml:lang="ru"><surname>Шалимов</surname><given-names>Евгений Станиславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>gkc-iprti@med.cap.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Chuvash State University named after I.N. Ulyanov</institution></aff><aff><institution xml:lang="ru">Чувашский государственный университет имени И.Н. Ульянова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">City Clinical Center</institution></aff><aff><institution xml:lang="ru">Городской клинический центр</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-09-29" publication-format="electronic"><day>29</day><month>09</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2021-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2021</year></pub-date><volume>159</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>153</fpage><lpage>160</lpage><history><date date-type="received" iso-8601-date="2022-09-07"><day>07</day><month>09</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-09-07"><day>07</day><month>09</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Эко-Вектор</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</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://j-morphology.com/1026-3543/article/view/110835">https://j-morphology.com/1026-3543/article/view/110835</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND</italic></bold><italic>: </italic>Magnetic resonance imaging (MRI) tomography is now widely used for the clinical assessment of the state of pelvic organs. Its findings are used in clinical practice for topographic and anatomical substantiation of transvaginal surgical access to the abdominal cavity through the posterior fornix of the vagina.</p> <p><bold><italic>AIM</italic></bold><italic>:</italic> To identify topographic and anatomical relationship patterns of the rectum and uterus based on MRI data to justify transvaginal surgical access to the abdominal cavity through the posterior vaginal fornix.</p> <p><bold><italic>MATERIAL AND METHODS</italic></bold><italic>: </italic>The study was performed using 58 cases of MRI examinations of the pelvis of women (average age, 41.35±5.45 years) on the EXCELART Vantage Atlas 1.5 TSL tomograph (Toshiba) using a standard combination of pulse sequences (modes T1-VI, T2-VI, T-1 Fsat, T-2 Fsat, DWI, and T-2 STIR, with section thickness of 3–5 mm) without intravenous contrast in a moderately filled bladder using a standard combination of pulse sequences in typical (<italic>anteversion</italic>–<italic>anteflexion</italic>) and variant (<italic>retro</italic>, <italic>sinistro</italic> <italic>et</italic> <italic>dextrodeviatio</italic> <italic>uteri</italic>) positions of the uterus.</p> <p><bold><italic>RESULTS</italic></bold><italic>:</italic> In more than half of the cases, the supravaginal portion of the rectum, along with the sacral flexure, is supplemented by a flexure in the frontal plane. It influences the close or distant anatomical relationship of the rectum to the uterus. This position of organs determines the shape of the rectouterine pouch and techniques of performing transvaginal accesses to the abdominal cavity through the posterior vaginal fornix. A narrow shape of excavation can be a reason for refusal of interventions, and a wide shape is a favorable anatomical prerequisite for implementation. In most cases, the vaginal portion of the rectum is represented by a sacral flexure, and in a small number of cases, it is supplemented by a flexure in the frontal plane.</p> <p><bold><italic>CONCLUSIONS</italic></bold><italic>: </italic>The degree of anatomical proximity of the rectum to the uterus (maximum anatomical proximity or distance) determines the shape of the rectouterine pouch. The transvaginal surgical access to the abdominal cavity through the posterior vaginal fornix is crucial.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Обоснование</italic></bold><italic>.</italic> Для клинической оценки состояния органов малого таза в настоящее время широкое применение получила магнитно-резонансная томография (МРТ). Её результаты используются в клинической практике для топографо-анатомического обоснования трансвагинальных хирургических доступов в брюшную полость через задний свод влагалища.</p> <p><bold><italic>Цель</italic></bold><italic> —</italic> выявить закономерности прижизненных топографо-анатомических взаимоотношений прямой кишки и матки по данным МРТ для обоснования трансвагинальных хирургических доступов в брюшную полость через задний свод влагалища.</p> <p><bold><italic>Материалы и методы</italic></bold><italic>.</italic> Исследование выполнено на 58 результатах МРТ-исследования таза женщин среднего возраста (41,35±5,45 года) на томографе EXCELART Vantage Atlas 1,5 Тл, Toshiba, с использованием стандартной комбинации импульсных последовательностей (в режимах Т1-ВИ, Т2-ВИ, Т-1 Fsat, Т-2 Fsat, DWI, Т-2 STIR, толщина срезов 3–5 мм) без внутривенного контрастирования при умеренно наполненном мочевом пузыре с использованием стандартной комбинации импульсных последовательностей при типичных (<italic>anteversio-anteflexio</italic>) и вариантных (<italic>retro</italic>, <italic>sinistro et dextrodeviatio uteri</italic>) положениях матки.</p> <p><bold><italic>Результаты</italic></bold><italic>.</italic> Установлено, что более чем в половине случаев надвлагалищный участок прямой кишки, наряду с крестцовым изгибом, дополняется изгибом во фронтальной плоскости. Это влечёт близкое или удалённое анатомическое соседство кишки с маткой. Такое положение органов определяет формы прямокишечно-маточного углубления и тактику выполнения трансвагинальных доступов в брюшную полость через задний свод влагалища. Узкая форма углубления служит поводом для отказа от вмешательств, широкая является благоприятной анатомической предпосылкой для их выполнения. Влагалищный участок прямой кишки в большинстве случаев представлен крестцовым изгибом и лишь в незначительном количестве случаев дополняется изгибом во фронтальной плоскости.</p> <p><bold><italic>Выводы</italic></bold><italic>.</italic> Степень анатомического соседства прямой кишки с маткой (максимальная анатомическая близость или удалённость) определяет форму прямокишечно-маточного углубления, является определяющей для выполнения трансвагинальных хирургических доступов в брюшную полость через задний свод влагалища.</p></trans-abstract><kwd-group xml:lang="en"><kwd>uterus</kwd><kwd>rectum</kwd><kwd>MRI anatomy</kwd><kwd>female pelvic organs</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>матка</kwd><kwd>прямая кишка</kwd><kwd>магнитно-резонансно-томографическая анатомия</kwd><kwd>органы женского таза</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">Baekelandt J. 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