Cancers with close margins or a getting of perineural invasion (cancer invading compact nerves) or lymphovascular invasion (cancer invading smaller vessels) can also be considered for adjuvant radiation treatment. Spread from the cancer to lymph nodes from the neck can also be dealt with with radiation soon after surgical procedure. https://keeganajrxc.wikiitemization.com/4831421/the_definitive_guide_to_benign_tumor_treatment_singapore