CTICasesLeft Ventricular Fibroma
Imaging findings
Cardiac CT shows a large, well-circumscribed, low-attenuation mass in the inferior wall of the left ventricle. Cardiac MRI shows the mass is low signal/low attenuation on T1/T2 pre-contrast, with minimal early enhancement but intense, homogeneous late gadolinium enhancement. Histopathology shows a dense collagenous tumor infiltrating between myocardial fibers.
Key takeaways
Cardiac fibromas are benign congenital tumors composed of fibroblasts and collagen that typically arise in the ventricular myocardium of children and young adults. They are well-circumscribed, show minimal early enhancement, but demonstrate characteristic delayed enhancement on cardiac MRI.
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