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She was successfully treated with antibiotics for 6 weeks and her clinical condition improved. We believe that the patients\u2019 previous dental extraction has possibly resulted in a paradoxical embolism through the atrial septal defect bypassing the pulmonary circulation. The MRI scan picture was misleading, as it was initially thought to be a high-grade brain tumour.<\/jats:p>","DOI":"10.1136\/bcr.06.2011.4305","type":"journal-article","created":{"date-parts":[[2011,7,20]],"date-time":"2011-07-20T09:18:14Z","timestamp":1311153494000},"page":"bcr0620114305","source":"Crossref","is-referenced-by-count":2,"title":["A neurosurgical presentation of patent foramen ovale with atrial septal 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