Primary tumors of the heart are rare in infancy and childhood and are most often benign. The most common heart tumors in children are rhabdomyomas. They often remain clinically unimportant and regress with age but may cause mechanical obstruction, heart failure, or arrhythmias. We report a newborn case with symptomatic cardiac rhabdomyoma and congenital hypothyroidism.

Keywords: intrakardiyak rabdomiyom, konjenital hipotiroidi, yenidoğan, intracardiac rhabdomyoma, congenital hypothyroidism, neonate