Early-Stage Loeffler's Endocarditis with Isolated Right Ventricular Involvement: Management, Long-Term Follow-Up, and Review of Literature

Loeffler's endocarditis is a clinical condition characterized by combination of three key findings: unexplained prolonged and marked eosinophilia (>1500 eosinophils/mm 3 ), absence of a primary cause of hypereosinophilia, and evidence of eosinophil‐mediated organ damage. We report a case of a 55‐year‐old African American male with symptoms of heart failure. Hematology showed white blood cell count of 17 670/mm 3 with 63% eosinophils and an...