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Summary

This summary is machine-generated.

A young man presented with fever, weight loss, and chest pain, initially suspected to be cardiac. Further investigation revealed eosinophilia and cardiac MRI findings indicative of eosinophilic myocarditis, a rare inflammatory heart condition.

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Area of Science:

Cardiology
Immunology
Internal Medicine

Background:

A 27-year-old male presented with unexplained fever, thoracic pain, and significant weight loss.
Initial investigations revealed elevated cardiac biomarkers (high-sensitivity troponin, C-reactive protein) and marked leukocytosis with eosinophilia.
Exclusion of parasitic and infectious etiologies prompted consideration of inflammatory conditions.

Observation:

Electrocardiography showed diffuse T-wave inversion, while initial echocardiography indicated normal left ventricular systolic function.
Subsequent cardiac MRI revealed increased left and right ventricular volumes and mildly reduced ejection fractions, suggesting myocardial involvement.
Neurological symptoms including headache and blurred vision prompted brain MRI, with cardiac MRI performed shortly after.

Findings:

Cardiac MRI demonstrated left ventricular end-diastolic volume (LVDV) of 165 mL (89 mL/m² BSA) and left ventricular end-systolic volume (LVSV) of 80 mL (43 mL/m² BSA), with a 52% ejection fraction.
Right ventricular end-diastolic volume (RVDV) was 163 mL (88 mL/m² BSA) and right ventricular end-systolic volume (RVSV) was 81 mL (44 mL/m² BSA), with a 50% ejection fraction.
The constellation of symptoms, eosinophilia, and cardiac MRI findings strongly suggested eosinophilic myocarditis.

Implications:

This case highlights the importance of considering eosinophilic myocarditis in patients with unexplained cardiac symptoms and eosinophilia, especially after excluding infectious causes.
Corticosteroid therapy was initiated, underscoring its role in managing inflammatory cardiomyopathies.
Advanced imaging like cardiac MRI is crucial for accurate diagnosis and assessment of myocardial involvement in such cases.