Written by Dr. Vajja Sandeep Kumar, Surgical Oncologist · Medically reviewed by Dr. Naresh Gundu, Medical Oncologist · Last reviewed May 2026
Most thyroid cancers begin as a small, painless lump in the front of the neck — and most are highly curable. The challenge is that thyroid nodules are extremely common, and only a small minority are cancerous. Knowing which signs deserve specialist attention, and getting the right tests, is the most reliable way to separate the harmless from the serious.
Thyroid cancer occurs when cells in the thyroid gland — a small butterfly-shaped gland at the front of the neck — grow uncontrollably and form a tumour. The thyroid produces hormones that regulate metabolism, body temperature, heart rate and energy levels. Most thyroid cancers grow slowly and are confined to the gland at the time of diagnosis, which is why outcomes are generally excellent.
Thyroid cancer is the most common endocrine cancer and is rising in incidence worldwide, including across India. Women are affected three to four times more often than men, and the cancer typically appears between the ages of 30 and 60. The rising incidence is largely driven by better detection — ultrasound now picks up nodules that would once have gone unnoticed — but environmental, genetic and lifestyle factors also play a role.
Thyroid cancers are classified by the cell type they arise from. The four main types differ markedly in behaviour and prognosis — most are excellent, but a small minority are aggressive and need specialist care.
The most common type, accounting for around 80% of thyroid cancers. It grows slowly, often spreads to nearby lymph nodes in the neck, but very rarely beyond. Cure rates exceed 95% with surgery and radioactive iodine treatment.
The second most common type, accounting for around 10–15% of cases. It is slightly more likely than papillary cancer to spread to lungs or bones via the bloodstream, but still has excellent outcomes with appropriate treatment.
A rarer type that arises from the calcitonin-producing C-cells. About a quarter of medullary cancers are hereditary, linked to mutations in the RET gene. Genetic testing is recommended for every patient with this diagnosis.
A rare but aggressive type, almost always seen in older adults. Anaplastic thyroid cancer requires urgent specialist care and modern combination therapy, including targeted treatments based on tumour mutation testing.
For detailed information on diagnosis, thyroidectomy, radioactive iodine and targeted therapy options, see our dedicated page on thyroid cancer treatment in Hyderabad.
Up to 50% of adults have a thyroid nodule on ultrasound, but only about 5–10% turn out to be cancerous. The right combination of ultrasound features, TSH testing and FNAC reliably separates benign from suspicious nodules — usually without surgery.
Most thyroid cancers cause no symptoms in their early stages and are picked up as a painless lump in the neck — sometimes by the patient, sometimes during a routine check-up or ultrasound. Watch for:
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Thyroid cancer incidence is rising steadily across India, including Telangana and Andhra Pradesh, and is now one of the most common cancers diagnosed in women under 40 in the region. A meaningful share of cases are detected incidentally — on neck ultrasound done for unrelated reasons, on routine health checks, or during evaluation for thyroid disorders, which are extremely common in this region given the historical iodine status and high rates of hypothyroidism. The good news is that most thyroid cancers found this way are early-stage papillary cancers with excellent cure rates.
Any neck lump that persists for more than 3–4 weeks deserves a thyroid ultrasound and a specialist opinion — not reassurance alone.
The exact cause of thyroid cancer is usually not identifiable, but several risk factors are well established:
Not every neck lump is cancer — but every persistent neck lump deserves an evaluation. See an oncologist or endocrine surgeon if you notice:
A short specialist consultation and the right diagnostic test — imaging, endoscopy, biopsy, or blood test as appropriate — is usually enough to confirm or rule out cancer. Early action is always easier than catching up later.
Our NABH-accredited centres across Hyderabad deliver evidence-based thyroid cancer care — from neck ultrasound and fine-needle aspiration cytology (FNAC) through to total thyroidectomy, central and lateral neck dissection, radioactive iodine ablation, thyroid hormone replacement, and targeted therapy for advanced or anaplastic disease — guided by NCCN and ATA guidelines and reviewed for every patient by a multidisciplinary tumour board.
For a detailed walk-through of thyroid cancer diagnosis, treatment options, costs, and our specialist team, see our dedicated page on thyroid cancer treatment in Hyderabad.
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Start Your Story. Book Free Consultation.The most common first sign is a painless lump or swelling in the front of the neck that moves up and down when you swallow. Other early signs include a persistent change in voice, difficulty swallowing, or an enlarged lymph node in the neck. Many thyroid cancers cause no symptoms at all and are detected incidentally on a neck ultrasound.
Yes — thyroid cancer is one of the most curable cancers. The most common type, papillary thyroid cancer, has 5-year survival rates above 95% when treated appropriately. Even patients with cancer that has spread to lymph nodes in the neck have excellent long-term outcomes. The rare anaplastic and advanced medullary subtypes are more challenging, but newer targeted therapies have meaningfully improved outcomes.
No — thyroid nodules are extremely common (seen in up to 50% of adults on ultrasound), and the great majority are benign. Only about 5–10% of thyroid nodules turn out to be cancerous. The right combination of ultrasound features, TSH testing, and fine-needle aspiration cytology (FNAC) reliably separates benign from suspicious nodules without unnecessary surgery.
The exact cause is often unknown. The strongest known risk factors are childhood exposure to ionising radiation, female sex, age between 30 and 60, a family history of thyroid cancer or related hereditary syndromes (such as MEN 2), and pre-existing benign thyroid disease.
Women, individuals aged 30–60, people with a family history of thyroid cancer or inherited syndromes (MEN 2, Cowden, familial polyposis), those with a history of childhood radiation exposure, and people with long-standing benign thyroid conditions such as Hashimoto's thyroiditis are at higher risk. Anyone in these groups with a new neck lump should have it evaluated promptly.
