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The lesion had grown rapidly during her pregnancy and she had presented to multiple hospitals and dental practitioners who had failed to diagnose her condition and recognize the potential for major complications for the patient and her baby. Bleeding was controlled with manual pressure while she underwent an emergency Caesarean section followed by emergency angiography and partial embolization of the lesion. The bleeding did not recur, and the lesion continued to regress post\u2010partum. This paper illustrates the diagnostic dilemma of recognizing an AVM and also the potentially disastrous consequences that could occur if a dentist was to embark on extractions or other surgical treatment in the vicinity of such a lesion without realizing its significance.<\/jats:p>","DOI":"10.1111\/adj.12895","type":"journal-article","created":{"date-parts":[[2021,12,17]],"date-time":"2021-12-17T07:58:25Z","timestamp":1639727905000},"page":"178-182","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Major haemorrhage from oral arteriovenous malformation during pregnancy: a case report"],"prefix":"10.1111","volume":"67","author":[{"given":"CLM","family":"Scott","sequence":"first","affiliation":[{"name":"Sydney Dental Hospital and Oral Health Services  Sydney New South Wales Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5698-8973","authenticated-orcid":false,"given":"ACL","family":"Holden","sequence":"additional","affiliation":[{"name":"Sydney Dental Hospital and Oral Health Services  Sydney New South Wales Australia"},{"name":"The University of Sydney School of Dentistry  Sydney New South Wales Australia"},{"name":"The University of Toronto Faculty of Dentistry  Toronto Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,12,29]]},"reference":[{"key":"e_1_2_4_2_1","first-page":"274","article-title":"Arteriovenous malformation of the base of the tongue in pregnancy: case report","volume":"29","author":"Martines F","year":"2009","journal-title":"Acta Otorhinolaryngol Ital"},{"key":"e_1_2_4_3_1","first-page":"1","article-title":"Pregnancy with large arteriovenous malformation of tongue: anesthetic challenges and conduct","volume":"15","author":"Ghosh I","year":"2021","journal-title":"A A Pract"},{"key":"e_1_2_4_4_1","unstructured":"DiepJ DanduK Gonzalez\u2010FiolAJ.Successful neuraxial anesthesia for cesarean delivery in a patient with severe oral and neck arteriovenous malformations. 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