# Cardiac Magnetic Resonance Imaging Used to Determine a Rare Etiology of a Layered Left Ventricular Apical Thrombus

## TL;DR

A rare case of a layered heart blood clot was diagnosed using MRI, avoiding invasive procedures.

## Contribution

Presents a non-invasive diagnostic approach for a rare heart condition using cardiac MRI.

## Key findings

- Cardiac MRI identified a layered left ventricular thrombus in a patient with syncopal episode.
- Avoided invasive testing by using MRI and lab studies to determine the etiology of the thrombus.
- Case highlights the utility of MRI in diagnosing eosinophilic myocarditis without biopsy.

## Abstract

Eosinophilic myocarditis (EM) is a rare disease, often associated with hypereosinophilic syndrome (HES). Historically, the diagnostic gold standard was endomyocardial biopsy (EMB). We present a unique case of a 58-year-old female who presents after a syncopal episode and was found to have a layered left ventricular (LV) thrombus. Using laboratory studies and cardiac magnetic resonance imaging (MRI), we were able to delineate the etiology, avoiding any invasive testing.