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In this study, the presence of calcification in an aneurysm was the sole marker of adverse outcome. Larger aneurysms tended to be more likely to be calcified. Size by itself did not have an adverse affect on outcome. Clipping or clip reconstruction of calcified aneurysms is a significant source of morbidity in the treatment of unruptured aneurysms (Odds ratio 7.8).

The authors report the case of an acute left middle cerebral artery distribution stroke caused by a terminal internal carotid artery occlusion in a patient who underwent endovascular mechanical embolectomy. Histopathological analysis of embolic material obtained from the mechanical retriever device was diagnostic of a high-grade phyllodes breast tumor. This case represents the first instance, to our knowledge, of tumor embolus extraction via mechanical retrieval during acute ischemic stroke intervention.

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