Cardiac rhabdomyoma

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Diagram showing common location of cardiac rhabdomyoma
ComplicationsAbnormal heart beat, obstruction of blood flow from the heart[1]
Diagnostic methodEchocardiography[1]
TreatmentWatching, partial surgery, mTOR inhibitors[2]

Cardiac rhabdomyoma is a noncancerous tumor of the heart, a type of rhabdomyoma.[1] It typically occurs within the ventricular muscle, and less frequently in the atria.[1] It may present on routine ultrasound screening of the baby in a pregnant mother.[1] There may be no symptoms or mild symptoms with a heart murmur.[1] Tuberous sclerosis may be present in up to 70% to 90% of cases.[2]

There typically several rather than just one tumor.[2] Complications include abnormally beating heart and obstruction of blood flow from the heart.[2] Diagnosis is by echocardiography.[1] There is a possibility that the tumor disappears as the child gets older, without treatment.[1] However, if symptoms or arrhythmia then cutting some of the tumor out, but preserving important heart structures, may be required.[1] mTOR inhibitors may be considered.[2]

More than 60% of heart tumors in children are of the cardiac rhabdomyoma type.[1]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 WHO Classification of Tumours Editorial Board (2021). "3. Tumours of the heart: Cardiac rhabdomyoma". Thoracic Tumours. Vol. 5 (5th ed.). Lyon (France): World Health Organization. pp. 239–240. ISBN 978-92-832-4506-3. Archived from the original on 2022-05-14. Retrieved 2022-07-24.
  2. 2.0 2.1 2.2 2.3 2.4 Maleszewski, Joseph J.; Basso, Cristina; Bois, Melanie C.; Glass, Carolyn; Klarich, Kyle W.; Leduc, Charles; Padera, Robert F.; Tavora, Fabio (April 2022). "The 2021 WHO Classification of Tumors of the Heart". Journal of Thoracic Oncology: Official Publication of the International Association for the Study of Lung Cancer. 17 (4): 510–518. doi:10.1016/j.jtho.2021.10.021. ISSN 1556-1380. PMID 34774791. Archived from the original on 2022-07-24. Retrieved 2022-07-24.