definitions - understudies. understudy (n.) 1.someone who takes the place of another (as when things get dangerous or difficult)the star had a stand-in for dangerous scenes we need extra employees for summer fill-ins. 2.an actor able to replace a regular performer when required. understudy (v.)
Radiation can come in the form of a pill. Iodine (131 I) used in thyroid treatment might be given in pill form or as a liquid. The choice is an institutional decision based on many factors, including the amount to be given to a patient.
The most significant immediate side effects of radiation for head and neck cancers are mucositis, inflammation of the mucous membranes of the mouth or throat, or dry mouth (xerostomia). These side effects may be further complicated by damage to the salivary glands, resulting in a lack of saliva.ne of the frequently encountered complications of radiation therapy for head and neck cancer is abnormally low levels of thyroid hormone, referred to as hypothyroidism. Signs and symptoms of hypothyroidism include weight gain, tiredness, depression, constipation, brittle nails, and pale color.