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Paediatric giant cell myocarditis: a case report.

Guilherme Lourenço¹, João Pimentel², Conceição Trigo¹

¹Paediatric Cardiology Department, Congenital Heart Disease Reference Centre, Hospital de Santa Marta, Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal.

Cardiology in the Young

|December 6, 2021

Summary

This summary is machine-generated.

A rare case of pediatric giant cell myocarditis in a teen resolved successfully with immunosuppressive therapy. This outcome, linked to leptospirosis, is highly unusual for this severe heart condition.

Keywords:

Leptospira Myocarditis adolescent giant cell myocarditis heart failure

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Area of Science:

Cardiology
Infectious Diseases
Immunology

Background:

Giant cell myocarditis is a rare and often severe form of heart muscle inflammation.
Pediatric cases are exceptionally uncommon, posing diagnostic and therapeutic challenges.

Observation:

A previously healthy 15-year-old male presented with fever and heart failure.
Endomyocardial biopsy confirmed giant cell myocarditis.
A history of leptospirosis infection was identified as a potential trigger.

Findings:

The patient received immunosuppressive treatment, leading to an excellent clinical response.
Left ventricular function normalized within 18 months of follow-up.
This case represents one of the few documented favorable outcomes in pediatric giant cell myocarditis.

Implications:

Early diagnosis and prompt immunosuppressive therapy can lead to favorable outcomes in pediatric giant cell myocarditis.
Leptospirosis should be considered in the differential diagnosis of unexplained myocarditis, particularly in endemic areas.
Further research is warranted to understand the pathogenesis and optimize treatment strategies for this rare condition.