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    Oral Complications of Chemotherapy and Head/Neck Radiation (PDQ®): Supportive care - Health Professional Information [NCI] - Late Complications of Head and Neck Radiation


    Recommendations for future research directions

    Radiation oncology textbooks often fail to mention trismus as a sequela of radiation therapy for HNC patients, contributing to a lack of recognition of the prevalence and significance of this condition. There has been an ongoing attempt by the Radiation Therapy Oncology Group and the European Organization for Research and Treatment of Cancer to develop LENT (late effects in normal tissue) morbidity scales. The National Cancer Institute consensus conferences introduced the SOMA (subjective, objective, management, analysis) classification for late toxicity. However, both scales are focused on major organ and dermatological injuries, and trismus is not addressed. This should be corrected in future revisions of these scales.

    Considering the high prevalence of trismus in published studies and the deficits in quality of life associated with trismus, increased efforts for patient education, prevention, and early treatment options are warranted. Larger prospective trials that include the prevention and treatment of trismus are needed to improve management and to confirm the benefit of IMRT in the reduction of radiation-induced trismus and the quality-of-life and economic impact of this common oral sequela of radiation.

    Current Clinical Trials

    Check NCI's list of cancer clinical trials for U.S. supportive and palliative care trials about xerostomia that are now accepting participants. The list of trials can be further narrowed by location, drug, intervention, and other criteria.

    General information about clinical trials is also available from the NCI Web site.


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    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Public Information from the National Cancer Institute

    Last Updated: May 28, 2015
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