"A bulge" would be a somewhat unusual term to be used to describe a nodule, but consistent with an enlarged thyroid. The nodule may or may not be related to the thyroid.
Your husband should not agree to a lung biopsy until the doctors can provide you and your husband a better explanation of what is going on. If they can't, you should consider getting a second opinion. You should also ask if the nodule was seen on the CT scan and if it has the characteristics of a benign lesion or a cancerous one.
Good luck.
Can someone please give me some anwser to this question?