Key result
Lipomatous infiltration with right ventricular thickness ≥6 mm on MRI without functional abnormalities appears distinct from arrhythmogenic right ventricular dysplasia in 13 evaluated patients.
Why the study?
Does marked lipomatous infiltration of the right ventricle on MRI without functional abnormalities indicate arrhythmogenic right ventricular dysplasia?
Observational (n=13)
Does marked lipomatous infiltration of the right ventricle on MRI without functional abnormalities indicate arrhythmogenic right ventricular dysplasia?
Marked lipomatous infiltration of the right ventricle on MRI without functional abnormalities is distinct from ARVD and should be interpreted cautiously to avoid unnecessary interventions.
Marked RV lipomatous infiltration ≥6 mm on MRI without dysfunction may not indicate ARVD; leaves open prospective validation before changing diagnostic criteria.
OBJECTIVE: The purpose of this study was to describe the structure and function of the heart in the presence of marked lipomatous infiltration of the right ventricular wall in 13 patients referred for second opinions about fatty infiltration of the right ventricular wall and suspected arrhythmogenic right ventricular dysplasia. CONCLUSION: Lipomatous infiltration with right ventricular thickness > or = 6 mm on MRI but without regional or global functional abnormalities of the right ventricle appears to be distinct from fatty right ventricle associated with arrhythmogenic right ventricular dysplasia. The finding of right ventricular fat must be interpreted cautiously to avoid the pharmacologic and defibrillator intervention associated with management of arrhythmogenic right ventricular dysplasia.
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Macedo et al. (2007) conducted an observational in Marked lipomatous infiltration of the right ventricular wall (n=13). MRI was evaluated on Structure and function of the heart. Lipomatous infiltration with right ventricular thickness ≥6 mm on MRI without functional abnormalities appears distinct from arrhythmogenic right ventricular dysplasia in 13 evaluated patients.
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