Diagnosis of Concomitant Myocarditis in a 13-Year-Old Patient with Crohn's Disease

Area of Science:

• Cardiology
• Gastroenterology
• Pediatrics

Background:

• Inflammatory bowel disease (IBD), encompassing Crohn's disease (CD) and ulcerative colitis, can present with diverse extraintestinal manifestations (EIMs).
• Cardiac involvement as an EIM of IBD is uncommon, making such cases diagnostically challenging and clinically significant.

Observation:

• A 13-year-old boy presented with symptoms suggestive of IBD, including abdominal pain and diarrhea.
• During hospitalization, he developed acute cardiac symptoms, including shortness of breath and chest discomfort, leading to the identification of fulminant myocarditis.
• Subsequent investigations confirmed active small intestine involvement, leading to a diagnosis of Crohn's disease.

Findings:

• The patient exhibited cardiomegaly, pulmonary edema, elevated cardiac markers, and impaired ventricular function, consistent with acute myocarditis.
• Capsule endoscopy revealed active bleeding ulcers in the small intestine, confirming Crohn's disease with significant gastrointestinal involvement.
• This case represents the first documented instance of myocarditis as an EIM in pediatric Crohn's disease.

Implications:

• The co-occurrence of myocarditis and gastrointestinal bleeding in this pediatric CD case suggests a potential underlying vasculitic process.
• This finding underscores the importance of considering cardiac complications in pediatric IBD patients presenting with systemic symptoms.
• Further research into the mechanisms linking IBD, vasculitis, and cardiac EIMs is warranted to improve patient management and outcomes.