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Non-bacterial thrombotic (marantic) endocarditis associated with giant-cell arteritis
D A. Hesselink1, J M. van der Klooster, L J.D.M. Schelfhout
1Department of Internal Medicine, Medisch Centrum Rijnmond Zuid, Locatie Clara, Olympiaweg 350, 3078 HT, Rotterdam, The Netherlands
European Journal of Internal Medicine
|September 15, 2001
Summary
This report details the first known case of a patient with giant-cell arteritis and non-bacterial thrombotic endocarditis. It highlights the need to reconsider diagnoses when no infectious agent is found.
Area of Science:
- Cardiology
- Rheumatology
- Pathology
Background:
- Giant-cell arteritis (GCA) is a systemic vasculitis.
- Non-bacterial thrombotic endocarditis (NBTE), also known as marantic endocarditis, involves sterile vegetations on heart valves.
- Co-occurrence of GCA and NBTE is rare.
Purpose of the Study:
- To report the first documented case of a patient presenting with both giant-cell arteritis and non-bacterial thrombotic endocarditis.
- To emphasize the diagnostic considerations in cases of suspected infective endocarditis where no pathogen is identified.
Main Methods:
- Case report presentation.
- Review of patient's clinical presentation, diagnostic workup, and pathological findings.
- Literature review for similar reported cases.
Main Results:
- A patient with confirmed giant-cell arteritis also exhibited non-bacterial thrombotic endocarditis affecting the mitral valve.
- Cultures were negative, ruling out infectious endocarditis.
- Pathological examination confirmed sterile vegetations.
Conclusions:
- The simultaneous occurrence of giant-cell arteritis and non-bacterial thrombotic endocarditis is exceptionally rare.
- Diagnostic re-evaluation is crucial for suspected infective endocarditis when microbiological investigations yield no pathogen.
- Non-infectious etiologies should be considered in such complex clinical scenarios.