The Dallas standard which is used for pathological diagnosis of VM has its defect to distinguish borderline VM and no VM. Moreover, we often find single or foci lymphocyte infiltrates in some normal myocardial interstitium.

• 由于用于病理诊断病毒性心肌炎的Dallas标准对于界线性心肌炎和无心肌炎鉴别的不确定性以及一部分正常心肌间质中可出现的单个或局灶性淋巴细胞浸润，使得对于一些光镜下心肌细胞改变不明显、炎细胞浸润较少的猝然死亡的案例难以做出准确的判断。