Most rhabdomyomas actually usually regress spontaneously.

横纹瘤其实通常会自发消退。

The most common primary cardiac tumor in infants and children are rhabdomyomas.

婴儿和儿童最常见原发性心脏肿瘤是横纹瘤。

Rhabdomyo refers to striated muscle tissue, or cardiac muscle tissue in this case, so rhabdomyomas are benign tumors of the heart that usually affect the ventricles, and are best considered hamartomas rather than a true neoplasm.

横纹是条状肉组织，这里就心；横纹瘤是良性肿瘤，且通常累及心室，最好被认为错构瘤而非肿瘤。