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Updated: Oct 5, 2026

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
[Cross-sectional imaging of post endocarditis paravalvular myocardial abscesses of native mitral valves: 4 cases]
C Reynier1, J Garcier, B Legault
1Service de Radiologie, CHU Montpied BP 69, 63003 Clermont-Ferrand Cedex.
Abstract:
Four cases of submitral myocardial abscess imaged by CT or MRI following endocarditis are described. All cases occurred in fragile patients (diabetes mellitus, dialysis, severe cardiovascular diseases). An iatrogenic source was noted in one patient. Staphylococcus aureus was responsible in 2 patients. If subvalvular aortic abscesses are usually described, submitral myocardial abscesses are infrequent. In addition to transesophageal echocardiography, a technique superior to transthoracic echocardiography, CT and MRI may incidentally suggest the correct diagnosis. Both techniques provide useful morphological evaluation, information that can be used to optimize the timing for surgical repair.
Insights
Submitral myocardial abscesses, rare post-endocarditis complications in fragile patients, can be suggested by CT and MRI. These imaging techniques aid in diagnosis and surgical planning for this infrequent condition.
Area of Science:
- Cardiology
- Radiology
- Infectious Diseases
Background:
- Subvalvular aortic abscesses are well-documented complications of endocarditis.
- Submitral myocardial abscesses are infrequently described, posing diagnostic challenges.
Observation:
- This study details four cases of submitral myocardial abscesses in critically ill patients, often with comorbidities like diabetes mellitus and cardiovascular disease.
- Staphylococcus aureus was identified as the causative agent in two cases.
- An iatrogenic source was noted in one patient, highlighting potential procedural risks.
Findings:
- Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) can incidentally suggest the diagnosis of submitral myocardial abscess.
- These advanced imaging modalities provide crucial morphological details for surgical assessment.
Implications:
- CT and MRI offer valuable diagnostic support, complementing echocardiography, particularly transesophageal echocardiography.
- Accurate imaging is essential for optimizing the timing of surgical intervention in these complex cases.
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