5/22/2023 0 Comments Dead Chest Island by J.J. Parsons![]() In contrast to cardiac rhabdomyoma, cardiac fibroma rarely regress spontaneously and often present with arrhythmias (32%), mostly ventricular tachycardia (risk exceeding 50%), ventricular fibrillation, murmur (20%), and abnormal chest x-ray (20%). Fibromas involving interventricular septum frequently induce conduction system disease with resulting rhythm abnormalities. It is probably because younger patients have a smaller heart and high tumor-to-heart ratio compared to older individuals, generating low cardiac output leading to poor outcomes. ![]() Septal involvement and age less than 17 years old at the time of diagnosis are associated with a poor prognosis. ![]() Hence, with somatic growth, the size of fibroma decreases relative to cardiac mass, but unlike rhabdomyoma, fibromas never resolve completely. ![]() There is a hypothesis that the tumor increases in size with physiological cardiac growth and stops growing when the growth of the heart completes, usually at 17 to 20 years of age. ![]() The most common site is the left ventricle (approximately 57% of the cases), followed by right ventricle (27.5%), and interventricular septum (17%). ![]()
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