A man in his 20s with underlying chemorefractory primary T-lymphoblastic lymphoma and hypereosinophilia developed acute chest pain in the ward after readmission for disease progression. ECG showed widespread ST depression and serum troponin was markedly elevated. Transthoracic echocardiography showed diffused thrombus deposition with preserved ejection fraction consistent with eosinophilic myocarditis. The patient ultimately succumbed to the disease, after complications with severe hospital-acquired pneumonia.