Hello,
Welcome to HCM and thank you for your question.
Thyroid nodules are very common in the population and you are right, the neck irradiation and the family history are the most common causes of the thyroid nodules.
If you were a patient in my clinic i would recommend you some further examinations for your nodules, before you start any treatment for the neck problem.
You didn't mention the dimensions of the nodules, but if they are over 1 cm i would recommend you to do the
hormonal profile, than a scintiscan of the thyroid gland and if one of the nodules results
cold in scintiscan i would recommend the fine needle
biopsy aspiration to rule out the malignancy.
Your doctor would ask you to do tumoral markers also, if there are some specific characteristics present in
ultrasound.
I hope this information will help you and i am in your disposal for further informations.
Best wishes,
Dr.Guni