Why the study?
Cardiac sarcoidosis can mimic other inflammatory cardiomyopathies, and distinguishing granulomatous myocardial involvement from active non-granulomatous myocarditis remains clinically challenging.
This case highlights the diagnostic challenge between cardiac sarcoidosis and non-granulomatous myocarditis, emphasizing the limitations of imaging and the need for timely tissue reassessment.
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Calls for caution with PET-guided immunosuppression in suspected cardiac sarcoidosis; leaves open value of repeat biopsy to exclude non-granulomatous myocarditis.**[[1]](https://academic.oup.com/ehjcr/advance-article/doi/10.
Sankar et al. (2026) studied this question.
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