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Magnetic resonance imaging of the brain of both patients showed the presence of multiple cerebral aneurysms that was later confirmed on conventional angiography. Both patients\u2019 aneurysms were managed conservatively. Serial angiograms were performed during their follow-up, which spanned several years. One patient\u2019s aneurysms remained static while the evolution of the other patient\u2019s aneurysms displayed a dynamic quality with some increasing in size while others diminished. This is the first description in which some aneurysms progressed while others regressed simultaneously in the same patient. Aneurysms in patients with a history of cardiac myxoma can be active years after primary tumor resection and it is difficult to predict how they will develop. We reviewed the literature of all patients with multiple myxomatous aneurysms who were treated conservatively to better understand the natural history of this rare disease. Long-term follow-up of these patients may be necessary.<\/jats:p>","DOI":"10.1177\/1591019917754070","type":"journal-article","created":{"date-parts":[[2018,1,31]],"date-time":"2018-01-31T08:25:26Z","timestamp":1517387126000},"page":"277-283","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["The dynamic natural history of cerebral aneurysms from cardiac myxomas: A review of the natural history of myxomatous aneurysms"],"prefix":"10.1177","volume":"24","author":[{"given":"Paloma Largo","family":"Flores","sequence":"first","affiliation":[{"name":"Unit of Interventional Neuroradiology, Radiodiagnostic Service, University Hospital La Princesa, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felix","family":"Haglund","sequence":"additional","affiliation":[{"name":"Department of Oncology-Pathology, Karolinska Institutet and Karolinska University Hospital, Stockholm, 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