CMR findings after COVID-19 and after COVID-19-vaccination—same but different?

Abstract Cardiac involvement has been described in varying proportions of patients recovered from COVID-19 and proposed as a potential cause prolonged symptoms, often post-COVID or long COVID syndrome. Recently, cardiac complications have reported vaccines well. We aimed to compare CMR-findings with clinical symptoms after vaccination. From May 2020 2021, we included 104 suspected who received clinically indicated magnetic resonance (CMR) examination at high-volume center. The mean time first positive PCR CMR was 112 ± 76 days. During their disease, 21% required hospitalization, 17% supplemental oxygen 7% mechanical ventilation. In 34 (32.7%) patients, provided relevant diagnosis: Isolated pericarditis 10 (9.6%), %), acute myocarditis (both LLC) 7 (6.7%), possible (one 5 (4.8%), ischemia 4 (3.8%), recent infarction 2 (1.9%), old dilated cardiomyopathy 3 (2.9%), hypertrophic aortic stenosis, pleural tumor mitral valve prolapse each 1 (1.0%). Between 2021 August examined an additional 27 disease Of these, least one diagnosis 22 (81.5%): (14.8%), 9 (33.3%), (acute subsided) 6 (22.2%), (37.5% out 8 stress test), isolated pericardial effusion (> mm) non-compaction-cardiomyopathy (3.7%). number diagnoses highly dependent on the stringency criteria applied. When including only cases matching edema LGE excluding findings right ventricular insertion site, dropped while vaccination remained unchanged 9. While is overall rare side effect vaccination, it currently leading our institution due large vaccinations applied over last months. Contrary did not match were confined RV-insertion site. Whether these truly represent different pathological entity be determined further studies.