{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T12:49:41Z","timestamp":1772110181888,"version":"3.50.1"},"reference-count":9,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\nBackground: <\/jats:title>\nMeningiomas are histologically benign tumors and generally have a good prognosis. However, some are classified as high-grade meningiomas due to their strong invasion of surrounding tissues and high postoperative recurrence rates, resulting in a poor prognosis. Postoperative radiotherapy is often administered for the most malignant anaplastic meningiomas; however, its contribution to improving prognosis and reducing recurrence rates in patients with residual tumors is limited.<\/jats:p>\n<\/jats:sec>\n\nCase Description: <\/jats:title>\nWe present here a 48-year-old man with an anaplastic meningioma that recurred repeatedly and had invaded the right anterior cerebral artery (ACA) despite two postoperative radiotherapy sessions. Dissecting the tumor from the blood vessels was extremely difficult and would only have achieved a partial resection. However, we achieved complete resection by performing a pericallosal artery\u2013pericallosal artery (A3\u2013A3) side-to-side anastomosis and excising the infiltrated blood vessels along with the tumor en bloc<\/jats:italic>. No neurological deficits or complications, such as cerebral infarction, were detected postoperatively.<\/jats:p>\n<\/jats:sec>\n\nConclusion: <\/jats:title>\nAlthough reports of performing an A3\u2013A3 side-to-side anastomosis to enable complete resection of tumors invading the ACA are extremely rare worldwide, this procedure should be recognized as a safe and effective treatment option when complete tumor resection is strongly desired, as in the present patient.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_620_2024","type":"journal-article","created":{"date-parts":[[2024,9,13]],"date-time":"2024-09-13T10:50:12Z","timestamp":1726224612000},"page":"331","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Total removal of anaplastic meningioma infiltrating an artery by performing an A3\u2013A3 side-to-side anastomosis"],"prefix":"10.25259","volume":"15","author":[{"given":"Kosei","family":"Yoshimura","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sho","family":"Tsunoda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masafumi","family":"Segawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariko","family":"Kawashima","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomohiro","family":"Inoue","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsuya","family":"Akabane","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2024,9,13]]},"reference":[{"key":"10.25259\/SNI_620_2024\/ref-1","doi-asserted-by":"crossref","first-page":"E587","DOI":"10.1227\/NEU.0b013e3182036012","article-title":"Surgical 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(Hagerstown)"},{"key":"10.25259\/SNI_620_2024\/ref-4","doi-asserted-by":"crossref","first-page":"101562","DOI":"10.1016\/j.canep.2019.07.001","article-title":"Incidence, mortality and outcome of meningiomas: A population-based study from Germany","volume":"62","author":"Holleczek","year":"2019","journal-title":"Cancer Epidemiol"},{"key":"10.25259\/SNI_620_2024\/ref-5","doi-asserted-by":"crossref","first-page":"e42","DOI":"10.1016\/j.wneu.2020.04.124","article-title":"Anterior cerebral artery bypass for complex aneurysms: Advances in intracranial-intracranial bypass techniques","volume":"141","author":"Labib","year":"2020","journal-title":"World Neurosurg"},{"key":"10.25259\/SNI_620_2024\/ref-6","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1007\/s10014-021-00399-x","article-title":"Brain-invasive meningiomas: Molecular mechanisms and potential therapeutic options","volume":"38","author":"Qin","year":"2021","journal-title":"Brain Tumor Pathol"},{"key":"10.25259\/SNI_620_2024\/ref-7","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1016\/j.wneu.2022.04.107","article-title":"One-stage revascularization to the ipsilateral middle cerebral artery and contralateral anterior cerebral artery territories","volume":"164","author":"Tsunoda","year":"2022","journal-title":"World Neurosurg"},{"key":"10.25259\/SNI_620_2024\/ref-8","doi-asserted-by":"crossref","first-page":"3483","DOI":"10.1007\/s00701-021-04986-x","article-title":"Revascularization to the ACA: Effectiveness and variation of the STA-RAG-A3 bonnet bypass","volume":"163","author":"Tsunoda","year":"2021","journal-title":"Acta Neurochir"},{"key":"10.25259\/SNI_620_2024\/ref-9","first-page":"i1","article-title":"Introduction: Ongoing clinical challenges in the management of meningiomas and future directions","volume":"5","author":"Wang","year":"2023","journal-title":"Neurooncol Adv"}],"container-title":["Surgical Neurology 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