An Unusual Case of Myocarditis, Left Ventricular Thrombus, and Embolic Stroke Caused by Mycoplasma pneumoniae

Abstract

Mycoplasma pneumoniae is a common cause of community-acquired pneumonia, but it can affect other parts of the body. Due to the varied presentation and lack of readily available specific diagnostic tools, diagnosis is often challenging, which may lead to delay in the treatment and unfavorable outcomes. We describe such a unique case of myocarditis caused by Mycoplasma pneumoniae complicated by left ventricular thrombus and an embolic stroke without the presence of pneumonia. There is a paucity of data regarding Mycoplasma pneumoniae myocarditis and stroke in the absence of pulmonary symptoms especially in adults, calling for further studies for early diagnosis and management.

A Case Report of Mycoplasma pneumoniae-induced fulminant myocarditis in a 15-year-old male leading to cardiogenic shock and electrical storm

“…In previous reports, cardiac thrombosis associated with M. pneumonia is extremely rare ( 19 , 20 ). In the case presented, the persistence of left ventricular thrombi posed a significant challenge in clinical management.…”

Acute Lymphocytic Myocarditis With Mobile Left Ventricular Thrombus

“…To the best of our knowledge, there have been no reports of massive LVT detected in such a short time, as we experienced in our case. Oberoi et al report that LVT was noted at three weeks from Mycoplasma pneumoniae infection, and the autoimmune mechanism was considered to be the most likely cause [6]. In the case reported by Van Dam et al, five days had passed since the onset of myocarditis [7].…”