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Mitral Valve Aneurysm Associated with Aortic Valve
Endocarditis and Regurgitation
(#2001-18763 ... October 11, 2001)
Amish N. Raval, Alan H. Menkis, Derek R. Boughner
University of Western Ontario, Division of Cardiovascular Medicine
London Health Sciences Centre, University Campus, Canada
ABSTRACT
Mitral valve aneurysms are rare complications occurring
most commonly in association with aortic valve infective endocarditis.
[Decroly 1989, Chua 1990, Northridge 1991, Karalis
1992, Roguin 1996, Mollod 1997, Vilacosta 1997, Cai 1999,
Vilacosta 1999, Teskey 1999, Chan 2000, Goh 2000, Marcos-
Alberca 2000] While the mechanism of the development of
this lesion is unclear, complications such as perforation can
occur and lead to significant mitral regurgitation. [Decroly
1989, Karalis 1992, Teskey 1999, Vilacosta 1999] The case of a
69-year-old male with Streptococcus Sanguis aortic valve
endocarditis and associated anterior mitral leaflet aneurysm is
presented. Following surgery, tissue pathology of the excised
lesion revealed myxomatous degeneration and no active endocarditis
or inflammatory cells. This may add support to the
hypothesis that physical stress due to severe aortic insufficiency
and structural weakening, without infection of the anterior
mitral leaflet, can lead to the development of this lesion.
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