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Sarcomatoid mesothelioma

Last edited: 4/14/2026

Overview

Sarcomatoid mesothelioma is an aggressive variant of mesothelioma characterized by spindle-shaped cells resembling sarcoma, often associated with poor prognosis due to its rapid growth and resistance to therapy 12.

Diagnosis

  • Histomorphologic Diagnosis: Emphasis on detailed histomorphologic criteria for accurate diagnosis 2.
  • Pathology Reporting: Standardized reporting essential for consistent diagnosis and management 314.
  • Asbestos Exposure Assessment: Evaluate occupational exposure history, ideally corroborated by occupational hygienist assessment or job-exposure matrices 18.

    • Management

  • First-Line Treatment: Chemotherapy regimens such as cisplatin and pemetrexed are commonly used, though efficacy varies 1.
  • Adjunctive Therapies:
    • - CDK4/6 Inhibition: Abemaciclib shows promise in p16ink4A-deficient cases 4. - Radiotherapy: Used for symptom management, particularly pain control, though evidence is limited 910.
  • Palliative Care: Essential from diagnosis to manage symptoms and improve quality of life 613.

    • Special Populations

  • Elderly Patients: Increased focus on palliative care and symptom management due to advanced disease presentation 817.
  • Comorbidities: Tailored management considering additional health issues, emphasizing multidisciplinary approaches 13.

    • Key Recommendations

  • Standardize Pathology Reporting for consistent diagnosis and management of mesothelioma (Evidence: Strong 214).
  • Integrate Palliative Care Early in the management of mesothelioma patients to improve quality of life (Evidence: Strong 613).
  • Consider CDK4/6 Inhibitors in patients with p16ink4A-deficient mesothelioma for potential clinical activity (Evidence: Moderate 4).

    • References

    1 Kindler HL, Ismaila N, Bazhenova L, Chu Q, Churpek JE, Dagogo-Jack I et al.. Treatment of Pleural Mesothelioma: ASCO Guideline Update. Journal of clinical oncology : official journal of the American Society of Clinical Oncology 2025. link 2 Husain AN, Chapel DB, Attanoos R, Beasley MB, Brcic L, Butnor K et al.. Guidelines for Pathologic Diagnosis of Mesothelioma: 2023 Update of the Consensus Statement From the International Mesothelioma Interest Group. Archives of pathology & laboratory medicine 2024. link 3 Klebe S, Judge M, Brcic L, Dacic S, Galateau-Salle F, Nicholson AG et al.. Mesothelioma in the pleura, pericardium and peritoneum: Recommendations from the International Collaboration on Cancer Reporting (ICCR). Histopathology 2024. link 4 . CDK4/6 Inhibition Shows Clinical Activity in p16ink4A-Deficient Mesothelioma. Cancer discovery 2022. link 5 Port J, Murphy DJ. Mesothelioma: Identical Routes to Malignancy from Asbestos and Carbon Nanotubes. Current biology : CB 2017. link 6 Tinkler M, Royston R, Kendall C. Palliative care for patients with mesothelioma. British journal of hospital medicine (London, England : 2005) 2017. link 7 Sadler C. Dual role in mesothelioma care. Nursing standard (Royal College of Nursing (Great Britain) : 1987) 2016. link 8 Mercadante S, Degiovanni D, Casuccio A. Symptom burden in mesothelioma patients admitted to home palliative care. Current medical research and opinion 2016. link 9 MacLeod N, Chalmers A, O'Rourke N, Moore K, Sheridan J, McMahon L et al.. Is Radiotherapy Useful for Treating Pain in Mesothelioma?: A Phase II Trial. Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer 2015. link 10 France BD, Lewis RA, Sharma ML, Poolman M. Cordotomy in mesothelioma-related pain: a systematic review. BMJ supportive & palliative care 2014. link 11 Ibrahim N, Abou-Elela E, Darwish D. Survival of mesothelioma in a palliative medical care unit in egypt. Asian Pacific journal of cancer prevention : APJCP 2013. link 12 Riva MA, Carnevale F, Sironi VA, De Vito G, Cesana G. Mesothelioma and asbestos, fifty years of evidence: Chris Wagner and the contribution of the Italian occupational medicine community. La Medicina del lavoro 2010. link 13 Abrahm JL. Palliative care for the patient with mesothelioma. Seminars in thoracic and cardiovascular surgery 2009. link 14 Butnor KJ, Sporn TA, Ordonez NG. Recommendations for the reporting of pleural mesothelioma. Human pathology 2007. link 15 Chhajed PN, Bubendorf L, Hirsch H, Boehler A, Weder W, Tamm M. Mesothelioma after lung transplantation. Thorax 2006. link 16 Weill H, Hughes J, Churg A. Changing trends in US mesothelioma incidence. Occupational and environmental medicine 2005. link 17 Chapman E, Hughes D, Landy A, Whale J, Saunders M. Challenging the representations of cancer pain: experiences of a multidisciplinary pain management group in a palliative care unit. Palliative & supportive care 2005. link 18 Nam JM, Rice C, Gail MH. Comparison of asbestos exposure assessments by next-of-kin respondents, by an occupational hygienist, and by a job-exposure matrix from the National Occupational Hazard Survey. American journal of industrial medicine 2005. link 19 Tucker KL. The debate on elder abuse for undertreated pain. Pain medicine (Malden, Mass.) 2004. link 20 Huncharek M. Miliary mesothelioma. Chest 1994. link 21 Paksoy N, Demircan A, Altiner M, Artvinli M. Localised fibrous mesothelioma arising in an intralobar pulmonary sequestration. Thorax 1992. link 22 Morgan RW. Whodunit? Liability for mesothelioma cases. Journal of occupational medicine. : official publication of the Industrial Medical Association 1991. link 23 Oberholzer M, Feichter G, Dalquen P, Ettlin R, Christen H, Buser M. A simple "expert system" for morphometric evaluation of cells in pleural effusions. Pathology, research and practice 1989. link80210-9) 24 Van Poppel H, Van Renterghem K, Claes H, Oyen R, Moerman P, Baert L. Benign mesothelioma of the epididymis: case report. Urologia internationalis 1988. link 25 Karlinger K, Gere J, Németh L, Galgóczy G. Abdominal mesothelioma induced by occupational asbestos exposure. Acta morphologica Hungarica 1987. link 26 Stein N, Henkes D. Mesothelioma of the testicle in a child. The Journal of urology 1986. link45856-3) 27 McGuigan L, Fleming A. Pericardial mesothelioma presenting as systemic lupus erythematosus. Annals of the rheumatic diseases 1984. link 28 Kniznik DO, Roncoroni AJ, Rosenberg M, Olmedo G, Cohen HJ. Giant fibrous pleural mesothelioma associated with myocardial restriction and hypoglycemia. Respiration; international review of thoracic diseases 1979. link 29 Jaffe J, Roth JA, Carter H. Malignant papillary mesothelioma of tunica vaginalis testis. Urology 1978. link90023-7) 30 Hasan FM, Nash G, Kazemi H. The significance of asbestos exposure in the diagnosis of mesothelioma: a 28-year experience from a major urban hospital. The American review of respiratory disease 1977. link

    Original source

    1. [1]
      Treatment of Pleural Mesothelioma: ASCO Guideline Update. — Kindler HL, Ismaila N, Bazhenova L, Chu Q, Churpek JE, Dagogo-Jack I et al. Journal of clinical oncology : official journal of the American Society of Clinical Oncology (2025)
    2. [2]
      Guidelines for Pathologic Diagnosis of Mesothelioma: 2023 Update of the Consensus Statement From the International Mesothelioma Interest Group. — Husain AN, Chapel DB, Attanoos R, Beasley MB, Brcic L, Butnor K et al. Archives of pathology & laboratory medicine (2024)
    3. [3]
      Mesothelioma in the pleura, pericardium and peritoneum: Recommendations from the International Collaboration on Cancer Reporting (ICCR). — Klebe S, Judge M, Brcic L, Dacic S, Galateau-Salle F, Nicholson AG et al. Histopathology (2024)
    4. [4]
      CDK4/6 Inhibition Shows Clinical Activity in p16ink4A-Deficient Mesothelioma. Cancer discovery (2022)
    5. [5]
      Mesothelioma: Identical Routes to Malignancy from Asbestos and Carbon Nanotubes. — Port J, Murphy DJ Current biology : CB (2017)
    6. [6]
      Palliative care for patients with mesothelioma. — Tinkler M, Royston R, Kendall C British journal of hospital medicine (London, England : 2005) (2017)
    7. [7]
      Dual role in mesothelioma care. — Sadler C Nursing standard (Royal College of Nursing (Great Britain) : 1987) (2016)
    8. [8]
      Symptom burden in mesothelioma patients admitted to home palliative care. — Mercadante S, Degiovanni D, Casuccio A Current medical research and opinion (2016)
    9. [9]
      Is Radiotherapy Useful for Treating Pain in Mesothelioma?: A Phase II Trial. — MacLeod N, Chalmers A, O'Rourke N, Moore K, Sheridan J, McMahon L et al. Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer (2015)
    10. [10]
      Cordotomy in mesothelioma-related pain: a systematic review. — France BD, Lewis RA, Sharma ML, Poolman M BMJ supportive & palliative care (2014)
    11. [11]
      Survival of mesothelioma in a palliative medical care unit in egypt. — Ibrahim N, Abou-Elela E, Darwish D Asian Pacific journal of cancer prevention : APJCP (2013)
    12. [12]
      Mesothelioma and asbestos, fifty years of evidence: Chris Wagner and the contribution of the Italian occupational medicine community. — Riva MA, Carnevale F, Sironi VA, De Vito G, Cesana G La Medicina del lavoro (2010)
    13. [13]
      Palliative care for the patient with mesothelioma. — Abrahm JL Seminars in thoracic and cardiovascular surgery (2009)
    14. [14]
      Recommendations for the reporting of pleural mesothelioma. — Butnor KJ, Sporn TA, Ordonez NG Human pathology (2007)
    15. [15]
      Mesothelioma after lung transplantation. — Chhajed PN, Bubendorf L, Hirsch H, Boehler A, Weder W, Tamm M Thorax (2006)
    16. [16]
      Changing trends in US mesothelioma incidence. — Weill H, Hughes J, Churg A Occupational and environmental medicine (2005)
    17. [17]
      Challenging the representations of cancer pain: experiences of a multidisciplinary pain management group in a palliative care unit. — Chapman E, Hughes D, Landy A, Whale J, Saunders M Palliative & supportive care (2005)
    18. [18]
      Comparison of asbestos exposure assessments by next-of-kin respondents, by an occupational hygienist, and by a job-exposure matrix from the National Occupational Hazard Survey. — Nam JM, Rice C, Gail MH American journal of industrial medicine (2005)
    19. [19]
      The debate on elder abuse for undertreated pain. — Tucker KL Pain medicine (Malden, Mass.) (2004)
    20. [20]
      Miliary mesothelioma. — Huncharek M Chest (1994)
    21. [21]
      Localised fibrous mesothelioma arising in an intralobar pulmonary sequestration. — Paksoy N, Demircan A, Altiner M, Artvinli M Thorax (1992)
    22. [22]
      Whodunit? Liability for mesothelioma cases. — Morgan RW Journal of occupational medicine. : official publication of the Industrial Medical Association (1991)
    23. [23]
      A simple "expert system" for morphometric evaluation of cells in pleural effusions. — Oberholzer M, Feichter G, Dalquen P, Ettlin R, Christen H, Buser M Pathology, research and practice (1989)
    24. [24]
      Benign mesothelioma of the epididymis: case report. — Van Poppel H, Van Renterghem K, Claes H, Oyen R, Moerman P, Baert L Urologia internationalis (1988)
    25. [25]
      Abdominal mesothelioma induced by occupational asbestos exposure. — Karlinger K, Gere J, Németh L, Galgóczy G Acta morphologica Hungarica (1987)
    26. [26]
      Mesothelioma of the testicle in a child. — Stein N, Henkes D The Journal of urology (1986)
    27. [27]
      Pericardial mesothelioma presenting as systemic lupus erythematosus. — McGuigan L, Fleming A Annals of the rheumatic diseases (1984)
    28. [28]
      Giant fibrous pleural mesothelioma associated with myocardial restriction and hypoglycemia. — Kniznik DO, Roncoroni AJ, Rosenberg M, Olmedo G, Cohen HJ Respiration; international review of thoracic diseases (1979)
    29. [29]
      Malignant papillary mesothelioma of tunica vaginalis testis. — Jaffe J, Roth JA, Carter H Urology (1978)
    30. [30]
      The significance of asbestos exposure in the diagnosis of mesothelioma: a 28-year experience from a major urban hospital. — Hasan FM, Nash G, Kazemi H The American review of respiratory disease (1977)
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