D2I2.
benign

Rhabdomyoma

A rhabdomyoma is a tumor of striated muscle. Rhabdomyomas may be either or extracardiac. Extracardiac forms of rhabdomyoma are sub-classified into three distinct types: adult type, fetal type, and genital type.

Underlined words are explained — tap any of them.

Plain-language summary adapted from Wikipedia. Not medical advice.