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- 40% of benign neoplasms in infants and children
- Usually seen less than 1 year age
- Associated with tuberous sclerosis in 50% cases
- Arrhythmias usually presenting feature
- Inoperable – being deep seated, poorly demarcated and multiple
- Most regress spontaneously
Imaging
- Intramural, more common in ventricles
- Small and multiple
- Avg 3 to 4 cm in diameter
- ECHO: iso to hyper echoic
- CT: enhancing lesions, when multiple, appear as diffuse thickening of myocardium
- MR: similar to myocardium on T1 and hyper intense on T2