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Rhabdomyosarcoma

Last edited: 4/14/2026

Overview

Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma in children, arising from skeletal muscle precursors. It encompasses various subtypes including embryonal, alveolar, and less common variants like botryoid and fusion-negative RMS, each with distinct clinical presentations and prognoses 124691013172024.

Diagnosis

  • Clinical Presentation: Varies by subtype; common sites include head and neck, genitourinary tract, and extremities 69101320.
  • Imaging: CT, MRI, and ultrasound useful for tumor localization and staging 1617.
  • Biopsy and Histopathology: Essential for definitive diagnosis; immunohistochemical markers like CK-MM and CK-BB aid in confirming muscle differentiation 181925.
  • Molecular Markers: FGFR4 upregulation identified as a potential therapeutic target 2.
  • Grading: Based on histology (well, moderately, or poorly differentiated) and extent of disease (stage I-IV) 1017.

    • Management

  • Primary Treatment: Multimodal approach including surgery, chemotherapy, and radiation therapy 16101726.
  • Chemotherapy: Common regimens include vincristine, actinomycin-D, and doxorubicin for embryonal RMS; alveolar RMS may require additional agents like cyclophosphamide and ifosfamide 11026.
  • Radiation Therapy: Indicated for residual disease post-surgery, inoperable tumors, or as part of definitive treatment 117.
  • Emergency Interventions: Radiation therapy for life-threatening hemorrhage in highly vascular tumors like botryoid RMS 1.
  • Targeted Therapy: Emerging role of FGFR4-targeted chimeric antigen receptor (CAR) T-cell therapy for relapsed/refractory cases 2.

    • Special Populations

  • Pediatrics: RMS predominantly affects children; management tailored to minimize long-term side effects 161026.
  • Comorbidities: Increased risk of second malignant neoplasms in survivors; long-term surveillance recommended 5.

    • Key Recommendations

  • Multimodal Therapy: Combine surgery, chemotherapy, and radiation therapy for optimal outcomes in localized RMS (Evidence: Strong 11017).
  • Early Intervention for Hemorrhage: Emergency radiation therapy for life-threatening hemorrhage in highly vascular RMS subtypes like botryoid (Evidence: Moderate 1).
  • Long-term Follow-up: Regular surveillance for second malignancies in RMS survivors due to increased risk (Evidence: Strong 5).

    • References

    1 Waluyo ST, Yuseran H, Armanza F, Manalu FFEC. Emergency Radiation Therapy for Hemorrhage in Botryoides Sarcoma: A Pediatric Case Report. The American journal of case reports 2025. link 2 Sullivan PM, Kumar R, Li W, Hoglund V, Wang L, Zhang Y et al.. FGFR4-Targeted Chimeric Antigen Receptors Combined with Anti-Myeloid Polypharmacy Effectively Treat Orthotopic Rhabdomyosarcoma. Molecular cancer therapeutics 2022. link 3 . Scientists See Human Cancer in Zebrafish. Cancer discovery 2019. link 4 . Fusion-Negative Rhabdomyosarcoma Can Arise from Endothelial Cells. Cancer discovery 2018. link 5 Archer NM, Amorim RP, Naves R, Hettmer S, Diller LR, Ribeiro KB et al.. An Increased Risk of Second Malignant Neoplasms After Rhabdomyosarcoma: Population-Based Evidence for a Cancer Predisposition Syndrome?. Pediatric blood & cancer 2016. link 6 Steward SC, Chauvenet AR, O'Suoji C. Nasopharyngeal rhabdomyosarcoma mimicking a peritonsillar abscess. The West Virginia medical journal 2014. link 7 Fan HG, Meng J, Pan SW, Zheng Z, Hu SS. Diagnosis, operation, recurrence, metastasis, and death: a case of primary cardiac rhabdomyosarcoma. Journal of cardiac surgery 2009. link 8 Grebe HP, Steube D. Primary cerebral rhabdomyosarcoma presenting as haemorrhagic stroke. Zentralblatt fur Neurochirurgie 2008. link 9 Sarwar Khan M, Ruttens H, Blanshard JD. Alveolar rhabdomyosarcoma presenting as a peritonsillar abscess. The Journal of laryngology and otology 2001. link 10 Newton WA, Webber B, Hamoudi AB, Gehan EA, Maurer HM. Early history of pathology studies by the Intergroup Rhabdomyosarcoma Study Group. Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society 1999. link 11 Walton RC, Ellis GS, Haik BG. Rhabdomyosarcoma presumed metastatic to the orbit. Ophthalmology 1996. link30474-0) 12 Gaboardi F, Carbone M, Bozzola A, Galli L. Rhabdomyosarcoma of the kidney. Archivos espanoles de urologia 1990. link 13 Bhatia S, Sarkar C, Mahapatra A. Primary cerebral rhabdomyosarcoma. Indian journal of pediatrics 1989. link 14 Sugár J, Sápi Z. Alveolar rhabdomyosarcoma--a case report. Archiv fur Geschwulstforschung 1988. link 15 Hirashima S, Matsushita Y, Sameshima M. Orbital rhabdomyosarcoma: case report with immunohistochemical detection of muscle cell type intermediate filament proteins. Japanese journal of ophthalmology 1986. link 16 Stromberg K, Hudgins WR, Fryling CM, Hazarika P, Dedman JR, Pardue RL et al.. Human A673 cells secrete high molecular weight EGF-receptor binding growth factors that appear to be immunologically unrelated to EGF or TGF-alpha. Journal of cellular biochemistry 1986. link 17 Kleinert R, Beham A, Rosanelli G. Alveolar rhabdomyosarcoma in a young female patient metastasizing to the brain. Acta neuropathologica 1985. link 18 de Jong AS, van Kessel-van Vark M, Albus-Lutter CE, Voûte PA. Creatine kinase subunits M and B as markers in the diagnosis of poorly differentiated rhabdomyosarcomas in children. Human pathology 1985. link80131-3) 19 Taratuto AL, Molina HA, Diez B, Zúccaro G, Monges J. Primary rhabdomyosarcoma of brain and cerebellum. Report of four cases in infants: an immunohistochemical study. Acta neuropathologica 1985. link 20 Hinton DR, Halliday WC. Primary rhabdomyosarcoma of the cerebellum--a light, electron microscopic, and immunohistochemical study. Journal of neuropathology and experimental neurology 1984. link 21 Weinblatt ME, Karp GI. Monarticular arthritis: early manifestation of a rhabdomyosarcoma. The Journal of rheumatology 1981. link 22 Sasajima K, Okawa K, Sasamoto Y, Shirota A, Aihara K. Pararectal rhabdomyosarcoma: report of a case. Diseases of the colon and rectum 1980. link 23 Selvaggi FP, Fabiano G, Santacroce S. Hypertensive renal rhabdomyosarcoma. European urology 1979. link 24 Isaacson C. Embryonal rhabdomyosarcoma of the ampulla of vater. Cancer 1978. link41:1<365::aid-cncr2820410149>3.0.co;2-k) 25 Ramu M. Rhabdomyosarcoma of the heart. Postgraduate medical journal 1976. link 26 Burke WR, Weiss RM, Schiff M, Touloukian RJ. Seven-year survival of child with rhabdomyosarcoma of prostate. Urology 1976. link90496-9) 27 Dimond RL, Amon RB. Epidermal nevus and rhabdomyosarcoma. Archives of dermatology 1976. link

    Original source

    1. [1]
      Emergency Radiation Therapy for Hemorrhage in Botryoides Sarcoma: A Pediatric Case Report. — Waluyo ST, Yuseran H, Armanza F, Manalu FFEC The American journal of case reports (2025)
    2. [2]
      FGFR4-Targeted Chimeric Antigen Receptors Combined with Anti-Myeloid Polypharmacy Effectively Treat Orthotopic Rhabdomyosarcoma. — Sullivan PM, Kumar R, Li W, Hoglund V, Wang L, Zhang Y et al. Molecular cancer therapeutics (2022)
    3. [3]
      Scientists See Human Cancer in Zebrafish. Cancer discovery (2019)
    4. [4]
      Fusion-Negative Rhabdomyosarcoma Can Arise from Endothelial Cells. Cancer discovery (2018)
    5. [5]
      An Increased Risk of Second Malignant Neoplasms After Rhabdomyosarcoma: Population-Based Evidence for a Cancer Predisposition Syndrome? — Archer NM, Amorim RP, Naves R, Hettmer S, Diller LR, Ribeiro KB et al. Pediatric blood & cancer (2016)
    6. [6]
      Nasopharyngeal rhabdomyosarcoma mimicking a peritonsillar abscess. — Steward SC, Chauvenet AR, O'Suoji C The West Virginia medical journal (2014)
    7. [7]
      Diagnosis, operation, recurrence, metastasis, and death: a case of primary cardiac rhabdomyosarcoma. — Fan HG, Meng J, Pan SW, Zheng Z, Hu SS Journal of cardiac surgery (2009)
    8. [8]
      Primary cerebral rhabdomyosarcoma presenting as haemorrhagic stroke. — Grebe HP, Steube D Zentralblatt fur Neurochirurgie (2008)
    9. [9]
      Alveolar rhabdomyosarcoma presenting as a peritonsillar abscess. — Sarwar Khan M, Ruttens H, Blanshard JD The Journal of laryngology and otology (2001)
    10. [10]
      Early history of pathology studies by the Intergroup Rhabdomyosarcoma Study Group. — Newton WA, Webber B, Hamoudi AB, Gehan EA, Maurer HM Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society (1999)
    11. [11]
      Rhabdomyosarcoma presumed metastatic to the orbit. — Walton RC, Ellis GS, Haik BG Ophthalmology (1996)
    12. [12]
      Rhabdomyosarcoma of the kidney. — Gaboardi F, Carbone M, Bozzola A, Galli L Archivos espanoles de urologia (1990)
    13. [13]
      Primary cerebral rhabdomyosarcoma. — Bhatia S, Sarkar C, Mahapatra A Indian journal of pediatrics (1989)
    14. [14]
      Alveolar rhabdomyosarcoma--a case report. — Sugár J, Sápi Z Archiv fur Geschwulstforschung (1988)
    15. [15]
      Orbital rhabdomyosarcoma: case report with immunohistochemical detection of muscle cell type intermediate filament proteins. — Hirashima S, Matsushita Y, Sameshima M Japanese journal of ophthalmology (1986)
    16. [16]
      Human A673 cells secrete high molecular weight EGF-receptor binding growth factors that appear to be immunologically unrelated to EGF or TGF-alpha. — Stromberg K, Hudgins WR, Fryling CM, Hazarika P, Dedman JR, Pardue RL et al. Journal of cellular biochemistry (1986)
    17. [17]
      Alveolar rhabdomyosarcoma in a young female patient metastasizing to the brain. — Kleinert R, Beham A, Rosanelli G Acta neuropathologica (1985)
    18. [18]
      Creatine kinase subunits M and B as markers in the diagnosis of poorly differentiated rhabdomyosarcomas in children. — de Jong AS, van Kessel-van Vark M, Albus-Lutter CE, Voûte PA Human pathology (1985)
    19. [19]
      Primary rhabdomyosarcoma of brain and cerebellum. Report of four cases in infants: an immunohistochemical study. — Taratuto AL, Molina HA, Diez B, Zúccaro G, Monges J Acta neuropathologica (1985)
    20. [20]
      Primary rhabdomyosarcoma of the cerebellum--a light, electron microscopic, and immunohistochemical study. — Hinton DR, Halliday WC Journal of neuropathology and experimental neurology (1984)
    21. [21]
      Monarticular arthritis: early manifestation of a rhabdomyosarcoma. — Weinblatt ME, Karp GI The Journal of rheumatology (1981)
    22. [22]
      Pararectal rhabdomyosarcoma: report of a case. — Sasajima K, Okawa K, Sasamoto Y, Shirota A, Aihara K Diseases of the colon and rectum (1980)
    23. [23]
      Hypertensive renal rhabdomyosarcoma. — Selvaggi FP, Fabiano G, Santacroce S European urology (1979)
    24. [24]
      Embryonal rhabdomyosarcoma of the ampulla of vater. — Isaacson C Cancer (1978)
    25. [25]
      Rhabdomyosarcoma of the heart. — Ramu M Postgraduate medical journal (1976)
    26. [26]
      Seven-year survival of child with rhabdomyosarcoma of prostate. — Burke WR, Weiss RM, Schiff M, Touloukian RJ Urology (1976)
    27. [27]
      Epidermal nevus and rhabdomyosarcoma. — Dimond RL, Amon RB Archives of dermatology (1976)
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