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.
But past radiation treatment of your head, neck, or chest (especially during childhood) can put you at risk of getting thyroid cancer. Thyroid cancer can cause several symptoms: 1  You may get a lump or swelling in your neck. This is the most common symptom.  You may have pain in your neck and sometimes in your ears.