Key result
A patient presenting with clinical features of arrhythmogenic right ventricular cardiomyopathy was definitively diagnosed with isolated cardiac sarcoidosis via endomyocardial biopsy and achieved a good response to oral prednisolone.
Case Report (n=1)
Isolated cardiac sarcoidosis can present with clinical features overlapping with ARVC, making endomyocardial biopsy essential for a definitive diagnosis.
Biopsy may aid differentiation of cardiac sarcoidosis from ARVC mimics; leaves open need for prospective validation.
The diagnosis of cardiac sarcoidosis (CS) has become easier due to advances in imaging modalities, but we sometimes encounter difficult-to-diagnose patients. We herein report the case of a 60-year-old Japanese woman who was diagnosed with isolated CS, although she also met the diagnostic criteria of arrhythmogenic right ventricular cardiomyopathy (ARVC). A histological examination by an endomyocardial biopsy of the right ventricle revealed the typical findings of granulomatous change for CS. Although she did not show any characteristics of systemic sarcoidosis, oral prednisolone treatment was introduced, and she achieved a good response. This case shows that the characteristics of CS can overlap with the diagnostic criteria of ARVC, and that a histological examination is essential for the correct diagnosis of CS.
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Waki et al. (2017) conducted a case report in Isolated Cardiac Sarcoidosis (n=1). Oral prednisolone was evaluated on Clinical response. A patient presenting with clinical features of arrhythmogenic right ventricular cardiomyopathy was definitively diagnosed with isolated cardiac sarcoidosis via endomyocardial biopsy and achieved a good response to oral prednisolone.
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