Bykersma A, Bartley PB, Mau T and Rainbird AJ
Introduction: A non-infective inflammatory mitral valve mass has never been described outside the context of a concurrent rheumatological condition. Case presentation: Routine TTE review of an asymptomatic healthy 73-year-old male, seven years following the insertion of a Cosgrove annuloplasty ring revealed a large mass attached to the atrial surface of the mitral valve repair ring. Cardiac surgery was performed to excise the mitral annular mass, the Cosgrove ring removed, and the annulus debrided. Upon histological examination of the mass, it was revealed to comprise of a chronic inflammatory infiltrate with plasma cells and foreign body type giant cells adjacent to an organising fibrinous exudate. The mass was subjected to extensive infectious testing which was negative. Discussion: Non-infective mitral valve masses are well reported in literature. However, to our knowledge this is the first identification of an inflammatory mitral valve mass associated with a Cosgrove ring annuloplasty and warrants consideration in those with a suspected non-infectious mass following valvular surgery.
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