Nasal cavity, paranasal sinuses, nasopharynx
Other tumors

Author: Nat Pernick, M.D. (see Authors page)

Revised: 25 May 2018, last major update November 2004

Copyright: (c) 2004-2018,, Inc.

PubMed Search: Rhabdomyoma nasal

Page views in 2018: 93
Page views in 2019 to date: 4
Cite this page: Pernick, N. Rhabdomyoma. website. Accessed January 23rd, 2019.
Definition / general
  • Benign neoplasm of striated muscle with preference for head and neck
  • Divided into fetal and adult types based on histologic features, not patient age
Microscopic (histologic) description
  • Fetal type: immature slender muscle fibers and primitive spindle shaped mesenchymal cells; no pleomorphism, no mitotic figures, maturation at periphery of tumor
  • Adult type: rarely in nasopharynx; clear cytoplasm (glycogen), finely granular cytoplasm, sparse striations
Positive stains
  • Muscle markers
Electron microscopy description
  • Z bands in adult type