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Title: Rhabdomyoma  
Author: World Heritage Encyclopedia
Language: English
Subject: Rhabdomyosarcoma, Tuberous sclerosis, WHO classification of the tumors of the central nervous system, Salivary gland neoplasm, Pleomorphic adenoma
Publisher: World Heritage Encyclopedia


Surgically excised cardiac rhabdomyoma (unfixed).
Classification and external resources
ICD-10 D21 (ILDS D21.M50)
ICD-9-CM 215
ICD-O 8900/0
eMedicine med/2021
MeSH D012207

A rhabdomyoma is a benign tumor of striated muscle. Rhabdomyomas may be either "cardiac" or "extra cardiac" (occurring outside the heart). Extracardiac forms of rhabdomyoma are sub classified into three distinct types: (1) Adult type, (2) Fetal type, and (3) Genital type.

Cardiac rhabdomyomas are the most common primary tumor of the heart in infants and children. It has an association with tuberous sclerosis.[1] In those with tuberous sclerosis, the tumor may regress and disappear completely, or remain consistent in size.

It is most commonly associated with the tongue[2] and heart,[3] but can also occur in other locations, such as the vagina.[4]

Malignant skeletal muscle tumors are referred to as rhabdomyosarcoma. Only rare cases of possible malignant change have been reported in fetal rhabdomyoma.

Photomicrograph of fetal-type rhabdomyoma. Note the plump, pink benign skeletal muscle cells.


  1. ^ Bader RS, Chitayat D, Kelly E, et al. (November 2003). "Fetal rhabdomyoma: prenatal diagnosis, clinical outcome, and incidence of associated tuberous sclerosis complex". J. Pediatr. 143 (5): 620–4.  
  2. ^ Pérez-Alonso P, Sánchez-Simón R, Contreras F, Patrón-Romero M (December 2000). "Special feature: pathological case of the month. Denouement and discussion: fetal rhabdomyoma of the tongue (myxoid type)". Arch Pediatr Adolesc Med 154 (12): 1265–6.  
  3. ^ Sugiyama H, Naito H, Tsukano S, Echigo S, Kamiya T (November 2005). "Evaluation of cardiac tumors in children by electron-beam computed tomography: rhabdomyoma and fibroma". Circ. J. 69 (11): 1352–6.  
  4. ^  

External links

  • humpath #4562 (Pathology images)
  • Overview
  • Swedish National Board of Health
  • Image in fetus
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