心臓MRIが診断の一助となった，好酸球性多発血管炎性肉芽腫症に続発する好酸球性心筋炎の1例

A case of eosinophilic myocarditis following eosinophilic granulomatosis with polyangiitis diagnosed with cardiac magnetic resonance

心臓の形態および機能の検査の第一選択として，簡便さゆえに超音波検査が選択されることが多い。そこでなんらかの異常が指摘された場合や観察困難であった場合に，精査目的に心臓MRIが施行される。

We report a case of eosinophilic myocarditis following eosinophilic granulomatosis with polyangiitis which was diagnosed with cardiac magnetic resonance（CMR）. CMR showed hyperintensity on T2-STIR images through all layers of the myocardium that suggested the presence of acute inflammation and edema. The diffuse subendocardial late gadolinium enhancement（LGE）in the left ventricle and the increase of T1 value on T1 mapping revealed not only inflammation but also necrosis or fibrosis of the myocardium. These observations are consistent with typical eosinophilic myocarditis.