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The clinical significance of pannus in the prosthetic mitral valve (MV) is not well documented.

To investigate the clinical significance of pannus on cardiac computed tomography (CT) in patients with a prosthetic MV.

A total of 130 patients with previous MV replacement who underwent cardiac CT were retrospectively included in this study. The presence of pannus, paravalvular leak (PVL) around the prosthetic MV and limitation of motion (LOM) of the MV were analyzed using CT. Between patients with MV pannus and those without pannus, CT, echocardiographic, and redo-surgery findings were compared. The diagnostic performance of CT and transesophageal echocardiography (TEE) for the detection of MV pannus was also compared, using surgical findings as a standard reference.

MV pannus was observed on cardiac CT in 32.3% of the study population. Patients with MV …