Left Atrial Giant Cell Myocarditis Presenting as a Tumor: First-in-Man Case Report

Abstract Giant cell myocarditis is a rare and highly lethal disorder with resultant cardiac insufficiency. It necessitates aggressive immune suppression therapy, although the results are often fatal. When it affects only the atria, the characteristics of the disease changes completely. In this case report, we present atypical presentation of atrial giant cell myocarditis with mass lesion, which completely resolved after successful surgical resection without immuno suppression therapy.

摘要：巨细胞性心肌炎（Giant cell myocarditis）是一种罕见且致死率极高的疾病，可引发心功能不全。尽管该病需采取积极的免疫抑制治疗，但治疗效果往往不佳，患者常预后不良。若病变仅累及心房，该病的临床特征会发生显著改变。本病例报告呈现一例以肿块样病变为非典型表现的心房巨细胞性心肌炎病例，该患者在成功接受手术切除且未行免疫抑制治疗后，病变完全消退。