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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">Head and Neck Tumors</journal-id><journal-title-group><journal-title xml:lang="en">Head and Neck Tumors</journal-title><trans-title-group xml:lang="ru"><trans-title>Опухоли головы и шеи</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2222-1468</issn><issn publication-format="electronic">2411-4634</issn><publisher><publisher-name xml:lang="en">Publishing House ABV Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">680</article-id><article-id pub-id-type="doi">10.17650/2222-1468-2021-11-3-115-121</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CASE REPORT</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЙ СЛУЧАЙ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">iant extradural dermoid cyst in the right parietal-occipital region with obliteration of the transverse sinus</article-title><trans-title-group xml:lang="ru"><trans-title>Гигантская экстрадуральная дермоидная киста в правой теменно-затылочной области с облитерацией поперечного синуса</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9833-5006</contrib-id><name-alternatives><name xml:lang="en"><surname>Belozerskikh</surname><given-names>K. A.</given-names></name><name xml:lang="ru"><surname>Белозерских</surname><given-names>К. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Konstantin Aleksandrovich Belozerskikh</p><p>4 Kolomensky Dr., 115446 Moscow</p></bio><bio xml:lang="ru"><p>Константин Александрович Белозерских</p><p>115446 Москва, Коломенский пр-д, 4</p></bio><email>sofjar777@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6715-6021</contrib-id><name-alternatives><name xml:lang="en"><surname>Evzikov</surname><given-names>G. Yu.</given-names></name><name xml:lang="ru"><surname>Евзиков</surname><given-names>Г. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Bld. 1, 11 Rossolimo St., Moscow 119021</p></bio><bio xml:lang="ru"><p>119021 Москва, ул. Россолимо, 11, стр. 1</p></bio><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">S.S. Yudin City Clinical Hospital, Moscow Healthcare Department</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Городская клиническая больница им. С. С. Юдина Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">A.Ya. Kozhevnikov Clinic of Nervous System Diseases, University Clinical Hospital No. 3, I. M. Sechenov First Moscow State Medical&#13;
University, Ministry of Health of Russia</institution></aff><aff><institution xml:lang="ru">Клиника нервных болезней им. А.Я. Кожевникова Университетской клинической больницы № 3 ФГАОУ ВО Первый Московский государственный медицинский университет им. И. М. Сеченова Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2021-11-12" publication-format="electronic"><day>12</day><month>11</month><year>2021</year></pub-date><volume>11</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>115</fpage><lpage>121</lpage><history><date date-type="received" iso-8601-date="2021-11-12"><day>12</day><month>11</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2021, Belozerskikh K.A., Evzikov G.Y.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2021, Белозерских К.А., Евзиков Г.Ю.</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="en">Belozerskikh K.A., Evzikov G.Y.</copyright-holder><copyright-holder xml:lang="ru">Белозерских К.А., Евзиков Г.Ю.</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://ogsh.abvpress.ru/jour/article/view/680">https://ogsh.abvpress.ru/jour/article/view/680</self-uri><abstract xml:lang="en"><p><bold>The study objective </bold>– to report a case of giant extradural dermoid cyst in a 48‑year-old woman; the cyst caused extensive erosion of the occipital bone and lower portions of the right parietal bone, which is quite rare.</p><p><bold>Case report. </bold>A 48‑year-old female patient was admitted to the Department of Neurosurgery, A. Ya. Kozhevnikov Clinic of Nervous System Diseases, University Clinical Hospital No. 3, I. M . Sechenov First Moscow State Medical University on 28.07.2020. In 2002, the patient noted the emergence of a 1‑cm subcutaneous formation in the right occipital region. The formation was slowly growing. On 17.12.2015, she underwent magnetic resonance imaging of the brain. It revealed a 2,5 × 4,4 × 4,0 cm extradural formation with clear contours and erosion of the occipital and right parietal bones. On 12.03.2020, she had contrast-enhanced magnetic resonance imaging, which demonstrated that the tumor was growing (its size was 3,0 × 6,4 × 5,5 cm). Magnetic resonance imaging scans also showed extensive erosion (6,4 × 5,4 cm) of the occipital and right parietal bones and obliteration of the right transverse sinus. On 28.07.2020, the patient underwent elective surgery, namely excision of the extradural dermoid cyst in the right parietooccipital region with simultaneous reconstruction of the calvarial bones using a titanium plate. The cyst capsule and its contents were completely removed. The capsule was tightly attached to the dura mater, but did not invade it. To remove small fragments of the capsule that could potentially invade the bone, we performed small marginal resection of the calvarial bones at the depth of 2–3 mm from the defect margin. After the removal of cyst capsule, well-defined furrow could be visualized on the dura mater in the projection of the obliterated transverse sinus. Five days postoperatively, the patient was discharged from hospital in satisfactory condition.</p><p><bold>Conclusion. </bold>Surgical treatment of extradural dermoid cysts implies radical removal of the tumor. Since the cyst capsule gets tightly attached to the edges of the bone defect along with bone erosion, the removal of such cysts as a single block is almost impossible. The risk of severe erosion of the skull bones caused by a dermoid cyst with extradural (and sometimes intradural) growth increases with age. Therefore, it is recommended to remove such tumors as early as possible. Patients with skull bone defects also require cranioplasty.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель работы </bold>– представить клинический случай гигантской экстрадуральной дермоидной кисты, приведшей к распространенной эрозии затылочной кости и нижних отделов теменной кости справа у женщины 48 лет, что является редкостью.</p><p><bold>Клиническое наблюдение. </bold>Пациентка Г , 48 лет, поступила в нейрохирургическое отделение Клиники нервных болезней им. А. Я. Кожевникова Университетской клинической больницы № 3 Первого Московского государственного медицинского университета им. И. М . Сеченова 28.07.2020 г. В 2002 г. больная впервые отметила появление подкожного образования в правой затылочной области диаметром около 1,0 см. Размер объемного образования медленно увеличивался. 17.12.2015 была выполнена магнитно-резонансная томография головного мозга. В ходе исследования выявлено экстрадуральное объемное образование с четкими контурами размерами 2,5 × 4,4 × 4,0 см, с эрозией затылочной и правой теменной костей. 12.03.2020 повторно проведена магнитно-резонансная томография головного мозга с контрастным усилением: отмечен рост патологического образования, размеры которого составили 3,0 × 6,4 × 5,5 см. В ходе компьютерной томографии головного мозга, выполненной 12.03.2020, была визуализирована обширная эрозия затылочной и правой теменной костей размерами 6,4 × 5,4 см. Отмечена облитерация правого поперечного синуса. 28.07.2020 г. в плановом порядке проведена операция: удаление экстрадуральной дермоидной кисты в правой теменно-затылочной области и пластика костей свода черепа с использованием титановой пластины. Капсула кисты вместе с ее содержимым удалена радикально. Капсула была плотно прикреплена к твердой мозговой оболочке, но не прорастала в нее. Для удаления мелких фрагментов капсулы, которые могли внедриться в губчатое вещество кости, выполнена небольшая краевая резекция костей свода черепа глубиной 2–3 мм от края дефекта. После удаления капсулы дермоидной кисты в проекции облитерированного поперечного синуса на твердой мозговой оболочке визуализируется хорошо заметная борозда. На 5‑е сутки после оперативного вмешательства пациентка выписана в удовлетворительном состоянии.</p><p><bold>Заключение. </bold>Хирургическое лечение экстрадуральных дермоидных кист заключается в радикальном удалении объемного образования. Поскольку при развитии эрозии кости капсула кисты плотно спаивается с краями костного дефекта, удаление единым блоком подобных кист маловероятно. С возрастом риск появления выраженной эрозии костей черепа, вызванной дермоидной кистой с экстрадуральным (а иногда и интрадуральным) ростом, возрастает, поэтому целесообразно раннее удаление этих объемных образований. При наличии дефекта костей черепа необходима краниопластика.</p></trans-abstract><kwd-group xml:lang="en"><kwd>dermoid cyst</kwd><kwd>dura mater</kwd><kwd>erosion of the occipital and right parietal bones</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дермоидная киста</kwd><kwd>твердая мозговая оболочка</kwd><kwd>эрозия затылочной и правой теменной костей</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">1. Rubin G., Scienza R., Pasqualin A. et al. Craniocerebral epidermoids and dermoids. A review of 44 cases. Acta Neurochir (Wien) 1989;97(1–2):1–16. DOI: 10.1007/BF01577734.</mixed-citation><mixed-citation xml:lang="ru">Rubin G., Scienza R., Pasqualin A. et al. Craniocerebral epidermoids and dermoids. A review of 44 cases. Acta Neurochir (Wien) 1989;97(1–2):1–16. DOI: 10.1007/BF01577734.</mixed-citation></citation-alternatives></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">2. Louis D.N., Perry A., Reifenberger G. et al. The 2016 World Health Organization classification of tumors of the Central Nervous System: a summary. Acta Neuropathol 2016;131(6):803–20. DOI: 10.1007/s00401-016-1545-1.</mixed-citation><mixed-citation xml:lang="ru">Louis D.N., Perry A., Reifenberger G. et al. The 2016 World Health Organization classification of tumors of the Central Nervous System: a summary. Acta Neuropathol 2016;131(6):803–20. DOI: 10.1007/s00401-016-1545-1.</mixed-citation></citation-alternatives></ref><ref id="B3"><label>3.</label><citation-alternatives><mixed-citation xml:lang="en">3. Watanabe K., Filomena C.A., Nonaka Y. et al. Extradural dermoid cyst of the anterior infratemporal fossa. Case report. J Neurol Surg Rep 2015 Nov;76(2):e195–9. DOI: 10.1055/s-0034-1544111.</mixed-citation><mixed-citation xml:lang="ru">Watanabe K., Filomena C.A., Nonaka Y. et al. Extradural dermoid cyst of the anterior infratemporal fossa. Case report. J Neurol Surg Rep 2015 Nov;76(2):e195–9. DOI: 10.1055/s-0034-1544111.</mixed-citation></citation-alternatives></ref><ref id="B4"><label>4.</label><citation-alternatives><mixed-citation xml:lang="en">4. Coulibaly O., Komi E., Rifi L. et al. Rupture of a posterior fossa dermoid cyst overlying the torcular with extracranial extension: technical note. World J Neurosci 2015;5:82–6. DOI: 10.4236/wjns.2015.52009.</mixed-citation><mixed-citation xml:lang="ru">Coulibaly O., Komi E., Rifi L. et al. Rupture of a posterior fossa dermoid cyst overlying the torcular with extracranial extension: technical note. World J Neurosci 2015;5:82–6. DOI: 10.4236/wjns.2015.52009.</mixed-citation></citation-alternatives></ref><ref id="B5"><label>5.</label><citation-alternatives><mixed-citation xml:lang="en">5. Hong S.W. Deep frontotemporal dermoid cyst presenting as a discharging sinus: a case report and review of literature. Br J Plast Surg 1998 Apr;51(3):255–7. DOI: 10.1054/bjps.1997.0236.</mixed-citation><mixed-citation xml:lang="ru">Hong S.W. Deep frontotemporal dermoid cyst presenting as a discharging sinus: a case report and review of literature. Br J Plast Surg 1998 Apr;51(3):255–7. DOI: 10.1054/bjps.1997.0236.</mixed-citation></citation-alternatives></ref><ref id="B6"><label>6.</label><citation-alternatives><mixed-citation xml:lang="en">6. Sorenson E.P., Powel J.E., Rozzelle C.J. et al. Scalp dermoids: a review of their anatomy, diagnosis, and treatment. Childs Nerv Syst 2013;29(3):375–80. DOI: 10.1007/s00381-012-1946-y.</mixed-citation><mixed-citation xml:lang="ru">Sorenson E.P., Powel J.E., Rozzelle C.J. et al. Scalp dermoids: a review of their anatomy, diagnosis, and treatment. Childs Nerv Syst 2013;29(3):375–80. DOI: 10.1007/s00381-012-1946-y.</mixed-citation></citation-alternatives></ref><ref id="B7"><label>7.</label><citation-alternatives><mixed-citation xml:lang="en">7. Ray M.J., Barnett D.W., Snipes G.J. et al. Ruptured intracranial dermoid cyst. Proc (Bayl Univ Med Cent) 2012;25(1):23–5. DOI: 10.1080/08998280.2012.11928775.</mixed-citation><mixed-citation xml:lang="ru">Ray M.J., Barnett D.W., Snipes G.J. et al. Ruptured intracranial dermoid cyst. Proc (Bayl Univ Med Cent) 2012;25(1):23–5. DOI: 10.1080/08998280.2012.11928775.</mixed-citation></citation-alternatives></ref><ref id="B8"><label>8.</label><citation-alternatives><mixed-citation xml:lang="en">8. Khalid S., Ruge J. Considerations in the management of congenital cranial dermoid cysts. J Neurosurg Pediatr 2017;20(1):30–4. DOI: 10.3171/2017.2.PEDS16701.</mixed-citation><mixed-citation xml:lang="ru">Khalid S., Ruge J. Considerations in the management of congenital cranial dermoid cysts. J Neurosurg Pediatr 2017;20(1):30–4. DOI: 10.3171/2017.2.PEDS16701.</mixed-citation></citation-alternatives></ref><ref id="B9"><label>9.</label><citation-alternatives><mixed-citation xml:lang="en">9. Choi H.J. Bilateral lambdoid dermoid cyst. J Craniofac Surg 2014;25(4):e321–2. DOI: 10.1097/SCS.0000000000000585.</mixed-citation><mixed-citation xml:lang="ru">Choi H.J. Bilateral lambdoid dermoid cyst. J Craniofac Surg 2014;25(4):e321–2. DOI: 10.1097/SCS.0000000000000585.</mixed-citation></citation-alternatives></ref><ref id="B10"><label>10.</label><citation-alternatives><mixed-citation xml:lang="en">10. Choi J.S., Bae Y.C., Lee J.W., Kang G.B. Dermoid cysts: epidemiology and diagnostic approach based on clinical experiences. Arch Plast Surg 2018;45(6):512–6. DOI: 10.5999/aps.2018.00017.</mixed-citation><mixed-citation xml:lang="ru">Choi J.S., Bae Y.C., Lee J.W., Kang G.B. Dermoid cysts: epidemiology and diagnostic approach based on clinical experiences. Arch Plast Surg 2018;45(6):512–6. DOI: 10.5999/aps.2018.00017.</mixed-citation></citation-alternatives></ref><ref id="B11"><label>11.</label><citation-alternatives><mixed-citation xml:lang="en">11. Reissis D., Pfaff M.J., Patel A., Steinbacher D.M. Craniofacial dermoid cysts: histological analysis and inter-site comparison. Yale J Biol Med 2014;87(3):349–57.</mixed-citation><mixed-citation xml:lang="ru">Reissis D., Pfaff M.J., Patel A., Steinbacher D.M. Craniofacial dermoid cysts: histological analysis and inter-site comparison. Yale J Biol Med 2014;87(3):349–57.</mixed-citation></citation-alternatives></ref><ref id="B12"><label>12.</label><citation-alternatives><mixed-citation xml:lang="en">12. Currarino G., Rutledge J.C. Temporoparietal dermoid cysts with intracranial extension. AJNR Am J Neuroradiol. 1988;9(2):385–7.</mixed-citation><mixed-citation xml:lang="ru">Currarino G., Rutledge J.C. Temporoparietal dermoid cysts with intracranial extension. AJNR Am J Neuroradiol. 1988;9(2):385–7.</mixed-citation></citation-alternatives></ref><ref id="B13"><label>13.</label><citation-alternatives><mixed-citation xml:lang="en">13. Wood J., Couture D., David L.R. Midline dermoid cyst resulting in frontal bone erosion. J Craniofac Surg 2012;23(1):131–4. DOI: 10.1097/SCS.0b013e318240fe5e.</mixed-citation><mixed-citation xml:lang="ru">Wood J., Couture D., David L.R. Midline dermoid cyst resulting in frontal bone erosion. J Craniofac Surg 2012;23(1):131–4. DOI: 10.1097/SCS.0b013e318240fe5e.</mixed-citation></citation-alternatives></ref><ref id="B14"><label>14.</label><citation-alternatives><mixed-citation xml:lang="en">14. Prior A., Anania P., Pacetti M. et al. Dermoid and epidermoid cysts of scalp: case series of 234 consecutive patients. World Neurosurg 2018;120:119–24. DOI: 10.1016/j.wneu.2018.08.197.</mixed-citation><mixed-citation xml:lang="ru">Prior A., Anania P., Pacetti M. et al. Dermoid and epidermoid cysts of scalp: case series of 234 consecutive patients. World Neurosurg 2018;120:119–24. DOI: 10.1016/j.wneu.2018.08.197.</mixed-citation></citation-alternatives></ref><ref id="B15"><label>15.</label><citation-alternatives><mixed-citation xml:lang="en">15. Overland J., Hall C., Holmes A., Burge J. Risk of intracranial extension of craniofacial dermoid cysts. Plast Reconstr Surg 2020;145(4):779e–87e. DOI: 10.1097/PRS.0000000000006655.</mixed-citation><mixed-citation xml:lang="ru">Overland J., Hall C., Holmes A., Burge J. Risk of intracranial extension of craniofacial dermoid cysts. Plast Reconstr Surg 2020;145(4):779e–87e. DOI: 10.1097/PRS.0000000000006655.</mixed-citation></citation-alternatives></ref><ref id="B16"><label>16.</label><citation-alternatives><mixed-citation xml:lang="en">16. Tsugu H., Fukushima T., Hayashi S. et al. Squamous cell carcinoma arising in an intracranial dermoid cyst-case report. Neurol Med Chir (Tokyo) 2001;41(4):213–6. DOI: 10.2176/nmc.41.213.</mixed-citation><mixed-citation xml:lang="ru">Tsugu H., Fukushima T., Hayashi S. et al. Squamous cell carcinoma arising in an intracranial dermoid cyst-case report. Neurol Med Chir (Tokyo) 2001;41(4):213–6. DOI: 10.2176/nmc.41.213.</mixed-citation></citation-alternatives></ref><ref id="B17"><label>17.</label><citation-alternatives><mixed-citation xml:lang="en">17. Nishio S., Takeshita I., Morioka T., Fukui M. Primary intracranial squamous cell carcinomas: report of two cases. Neurosurgery 1995;37(2):329–32. DOI: 10.1227/00006123-199508000-00021.</mixed-citation><mixed-citation xml:lang="ru">Nishio S., Takeshita I., Morioka T., Fukui M. Primary intracranial squamous cell carcinomas: report of two cases. Neurosurgery 1995;37(2):329–32. DOI: 10.1227/00006123-199508000-00021.</mixed-citation></citation-alternatives></ref><ref id="B18"><label>18.</label><citation-alternatives><mixed-citation xml:lang="en">18. Elahi M.M., Glat P.M. Bilateral frontozygomatic dermoid cysts. Ann Plast Surg 2003;51(5):509–12. DOI: 10.1097/01.SAP.0000063747.71646.71.</mixed-citation><mixed-citation xml:lang="ru">Elahi M.M., Glat P.M. Bilateral frontozygomatic dermoid cysts. Ann Plast Surg 2003;51(5):509–12. DOI: 10.1097/01.SAP.0000063747.71646.71.</mixed-citation></citation-alternatives></ref></ref-list></back></article>
