Inflammation-A Possible Link between Myocarditis and Arrhythmogenic Cardiomyopathy

Area of Science:

• Cardiology
• Genetics
• Pathophysiology

Background:

• Arrhythmogenic cardiomyopathy (ACM) is a primary genetic heart muscle disease linked to desmosome gene mutations.
• Advanced imaging like cardiovascular magnetic resonance (CMR) complicates ACM diagnosis due to overlapping features with other cardiomyopathies and myocarditis.
• Acute phases of ACM can mimic other cardiac conditions, leading to misdiagnosis and impacting patient outcomes.

Purpose of the Study:

• To present a complex case of a 31-year-old patient with dynamic clinical presentations suggestive of arrhythmogenic cardiomyopathy.
• To explore shared pathophysiological pathways, particularly inflammation, between ACM and other cardiac entities.
• To question whether ACM represents a syndrome rather than a distinct condition given overlapping clinical manifestations.

Main Methods:

• Case report analysis of a 31-year-old male patient.
• Review of clinical presentation including acute chest pain, heart failure, and arrhythmias.
• Discussion of diagnostic challenges and differential diagnoses, including myocarditis and other cardiomyopathies.
• Exploration of underlying pathophysiological mechanisms, focusing on inflammation.

Main Results:

• The patient exhibited multiple, evolving clinical pictures initially mimicking other cardiac conditions.
• Diagnostic considerations shifted dynamically, ultimately including arrhythmogenic cardiomyopathy.
• The case underscores the diagnostic complexity and potential for symptom overlap with other heart diseases.

Conclusions:

• Arrhythmogenic cardiomyopathy diagnosis is challenging due to overlapping clinical and imaging features with other cardiac conditions.
• Inflammation may be a key shared pathway between ACM and entities like myocarditis.
• The case prompts consideration of arrhythmogenic cardiomyopathy as a potential syndrome due to its varied presentations.