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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">Kazan medical journal</journal-id><journal-title-group><journal-title xml:lang="en">Kazan medical journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Казанский медицинский журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0368-4814</issn><issn publication-format="electronic">2587-9359</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">81367</article-id><article-id pub-id-type="doi">10.17816/kazmj81367</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Errors in pregnancy diagnosis</article-title><trans-title-group xml:lang="ru"><trans-title>Ошибки в диагностике беременности</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kozlov</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Козлов</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Orlov</surname><given-names>Yu. V.</given-names></name><name xml:lang="ru"><surname>Орлов</surname><given-names>Ю. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ahchkaev</surname><given-names>I. M.</given-names></name><name xml:lang="ru"><surname>Анчкаев</surname><given-names>И. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>info@eco-vector.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kazan State Medical University</institution></aff><aff><institution xml:lang="ru">Казанский государственный медицинский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="1997-04-15" publication-format="electronic"><day>15</day><month>04</month><year>1997</year></pub-date><volume>78</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>103</fpage><lpage>106</lpage><history><date date-type="received" iso-8601-date="2021-09-28"><day>28</day><month>09</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-09-28"><day>28</day><month>09</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 1997, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 1997, Эко-Вектор</copyright-statement><copyright-year>1997</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/"/></permissions><self-uri xlink:href="https://kazanmedjournal.ru/kazanmedj/article/view/81367">https://kazanmedjournal.ru/kazanmedj/article/view/81367</self-uri><abstract xml:lang="en"><p>The causes of widely met diagnostic errors in pregnancy determination are considered. Several clinical cases of wrong diagnosis connected with pathologically changed female organism organs are described, as well as a case of false (suggestive) pregnancy is presented. The cause and effect relations of the origin of the pathologic symptom—complex of false pregnancy are analyzed. The causes of diagnostic errors in pregnancy differentiation are explained, and the conditions are emphasized when such errors are excluded.</p></abstract><trans-abstract xml:lang="ru"><p>Рассмотрены причины широко встречающихся диагностических ошибок при определении беременности. Описано несколько клинических случаев ошибочной диагностики, связанных с патологически измененными органами женского организма, а также представлен случай ложной (предполагаемой) беременности. Проанализированы причинно-следственные связи возникновения патологического симптомокомплекса ложной беременности. Объяснены причины диагностических ошибок при дифференциации беременности и выделены условия, при которых такие ошибки исключены.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Kazan Medical archive</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Казанский медицинский архив</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Бенедиктов И.И. Ошибки в акушерской практике. — Свердловск, 1973.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Бенедиктов И.И. Происхождение диагностических ошибок. — Свердловск, 1977.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Бобик Ю.Ю. Некоторые вопросы охраны материнства и детства. — Ужгород, 1961.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Ершова А.П.// Акуш. и гин. — 1959. — № 5. - С. 107.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Козлов Л.А., Золотарева М. 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