Paediatric presentation of cardiac involvement in hypereosinophilic syndrome

Area of Science:

• Pediatric Cardiology
• Hematology
• Pathology

Background:

• Eosinophilic endomyocarditis is exceptionally rare in children.
• Hypereosinophilic syndrome can manifest with severe cardiac involvement.

Observation:

• This case report details sequential cardiac changes in a child with hypereosinophilic syndrome.
• Observed progression from thrombotic to fibrotic stages of endomyocardial involvement.
• Increasing mitral regurgitation severity correlated with endomyocardial fibrosis.

Findings:

• Successful bioprosthetic valve replacement was performed.
• No recurrence of cardiac complications post-surgery.
• Underlying hypereosinophilic syndrome experienced a late relapse.

Implications:

• Demonstrates a viable surgical option for pediatric eosinophilic endomyocarditis.
• Highlights the importance of long-term monitoring for hypereosinophilic syndrome.
• Provides insights into the natural history and management of cardiac involvement in pediatric hypereosinophilic syndrome.