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Thyroid Nodule
A thyroid nodule is a lump in the thyroid gland at the front of the neck. Nodules are common and the great majority are not cancer, but they are checked to be sure.
Causes & risk factors
- Overgrowth of normal thyroid tissue (benign nodule)
- Fluid-filled cysts
- Iodine deficiency
- Thyroid inflammation (thyroiditis)
- Thyroid cancer (uncommon)
Common symptoms
- A lump felt or seen at the front of the neck
- Discomfort or pressure in the neck
- Difficulty swallowing if large
- Breathing difficulty if very large
- Symptoms of an overactive thyroid in some cases
Tests & diagnosis
- Thyroid function test (TFT)
- TSH
- Thyroid ultrasound
- Fine-needle aspiration (FNAC) biopsy
- Radioactive iodine scan in some cases
Treatment & management
- Benign nodules causing no problems are simply monitored
- Medicine if the thyroid is over- or under-active
- Draining a cyst if it is large or uncomfortable
- Surgery for large nodules, pressure symptoms or suspected cancer
- Radioactive iodine for some overactive nodules
When to see a doctor urgently
- A new or growing lump in the neck
- Difficulty swallowing or breathing
- A hoarse voice that persists
- A hard, fixed nodule or swollen neck glands
Not a diagnosis. MedDroid gives general educational information about thyroid nodule. It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
Is a thyroid nodule cancer?
Usually not — most nodules are benign. An ultrasound and, if needed, a needle biopsy tell benign from suspicious nodules so the right ones are treated.
Do all thyroid nodules need surgery?
No. Many are just monitored. Surgery is considered for large nodules, ones causing pressure symptoms, or those where cancer is suspected.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.