Key result
Contrast-enhanced cardiac magnetic resonance successfully identified an abscess caused by L. monocytogenes in a 47-year-old man, which resolved following antibiotic treatment.
Case Report (n=1)
Cardiac magnetic resonance is valuable for characterizing rare presentations of myocarditis, such as listerial myocarditis presenting as STEMI.
May inform diagnosis of rare cardiac infections; leaves open broader CMR application pending validation.
Listeria monocytogenes is an infrequent cause of bacterial myocarditis. Myocarditis without evidence of endocarditis is even rarer. Management in such cases involves early diagnosis, antibiotic therapy, and emergency treatment of arrhythmias. We report the case of a 47-year-old man who presented with features of acute ST-segment-elevation myocardial infarction complicated by ventricular tachycardia that necessitated urgent electrical cardioversion. Contrast-enhanced cardiac magnetic resonance images revealed hypertrophy, necrosis, and a mass that was determined to be an abscess caused by L. monocytogenes. Antibiotic treatment led to resolution of the listerial myocarditis. In addition to reporting our patient's case, we discuss the comparative advantages of cardiac magnetic resonance versus transthoracic echocardiography in characterizing myocarditis, upon presentation and in follow-up evaluation.
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Ladani et al. (2015) conducted a case report in Listerial myocarditis (n=1). Cardiac magnetic resonance and antibiotic therapy was evaluated on Resolution of listerial myocarditis. Contrast-enhanced cardiac magnetic resonance successfully identified an abscess caused by L. monocytogenes in a 47-year-old man, which resolved following antibiotic treatment.
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