- A benign neoplasm derived from striated muscle, occurring in the heart in children, probably as a hamartomatous process. [rhabdo- + G. mys, muscle, + -oma, tumor]
* * *rhab·do·my·o·ma .rab-dō-mī-'ō-mə n, pl -mas also -ma·ta -mət-ə a benign tumor composed of striated muscle fibers <a cardiac \rhabdomyoma>
* * *n.a rare benign tumour of skeletal muscle or heart muscle.
* * *rhab·do·my·o·ma (rab″do-mi-oґmə) [rhabdo- + myoma] a benign tumor derived from striated muscle. The cardiac form is considered to be a hamartoma and is often associated with tuberous sclerosis; the extracardiac form is a true neoplasm and is often divided into fetal and adult forms on the basis of the degree of cellular differentiation, distribution, patient age, and other factors.
Medical dictionary. 2011.