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Mycotic Coronary Aneurysms.

Heart, Lung & Circulation 2018 December 20
BACKGROUND: Mycotic coronary aneurysms (MCA) are rare but often lead to significant morbidity and mortality. Evidence on the topic is limited to case reports and small case series. A systematic review was performed to improve understanding of this challenging diagnosis. A case report prompting this review is also included.

METHODS: Relevant articles were identified by searching databases Medline and Google Scholar for terms 'mycotic coronary aneurysm'. Manual searching from article references identified further case reports.

RESULTS: Ninety-seven (97) published cases of MCA were identified between 1812 and 2017; 80 cases since the introduction of percutaneous coronary intervention (PCI) with stents in 1986. The most common associations were PCI (40.0%) and infective endocarditis (IE) (40.0%). Complications including aneurysm rupture (28.9%), pericardial effusion (37.3%) and myocardial infarction (39.8%) were frequent. Short-term mortality was high at 42.6%. The most common treatment was surgical resection of the aneurysm with bypass grafting.

CONCLUSIONS: We present a case and the largest systematic review to date of this rare diagnosis, identifying 97 published case reports. Clinical scenarios in which to consider MCA include febrile illness after recent PCI, febrile illness (particularly infective endocarditis) with evidence of coronary ischaemia, and purulent pericarditis. Given the high rate of complications and mortality, immediate surgical referral is recommended.

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