Most thyroid nodules don't cause signs or symptoms. But occasionally some nodules become so large that they can:  Be felt Be seen, often as a swelling at the base of your neck Press on your windpipe or esophagus, causing shortness of breath or difficulty swallowing  In some cases, thyroid nodules produce additional thyroxine, a hormone secreted by your thyroid gland. The extra thyroxine can cause symptoms of an overproduction of thyroid hormones (hyperthyroidism), such as:  Unexplained weight loss Increased sweating Tremor Nervousness Rapid or irregular heartbeat  Only a small number of thyroid nodules are cancerous. But determining which nodules are cancerous can't be done by evaluating your symptoms alone. Most cancerous thyroid nodules are slow growing and may be small when your doctor discovers them. Aggressive thyroid cancers are rare with nodules that may be large, firm, fixed and rapid growing.
thyroid nodules don't cause signs symptoms  occasionally nodules large can:  felt seen  swelling base neck press windpipe esophagus  causing shortness breath difficulty swallowing  cases  thyroid nodules produce additional thyroxine  hormone secreted thyroid gland  extra thyroxine can cause symptoms overproduction thyroid hormones (hyperthyroidism)  as:  unexplained weight loss increased sweating tremor nervousness rapid irregular heartbeat  only small number thyroid nodules cancerous  determining nodules cancerous can't evaluating symptoms alone  cancerous thyroid nodules slow growing may small doctor discovers them  aggressive thyroid cancers rare nodules may large  firm  fixed rapid growing
thyroid nodules