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Start free with EleplanIdiopathic giant cell myocarditis
ORPHA:329874Disease
Also called IGCM
What it is
A rare cardiac disease characterized by rapidly progressing myocarditis of unknown origin that may lead to progressive heart failure, heart block, ventricular arrhythmias, or sudden cardiac death. It is histologically characterized by myocardial necrosis and fibrosis with multinucleated giant cells and inflammatory cell infiltrate. Some patients have associated autoimmune disorders. It is a high-mortality risk condition and patients often require a heart transplant.
Key facts
- Age of onset
- Adolescent, Adult, Childhood, Infancy
- Inheritance
- Not applicable
- Classified as
- Disease
Signs and symptoms
Very common80–99%
5Common30–79%
4These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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