Loeffler endocarditis,also known as eosinophilic endocarditis,was first reported by Loeffler in 1932.The disease often presents with atypical clinical manifestations such as congestive heart failure.The diag-nostic criteria include a total number of peripheral blood eosinophils greater than 1.5×10 9/L and signs of cardiac involvement.Cardiac MRI is considered the non-invasive gold standard for diagnosis.Given the rarity of Loeffler endocarditis,it's crucial for clinicians to enhance their understanding of the disease.Early diagnosis and early treatment can significantly improve the survival rate.
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