Papillary Thyroid Cancer
Papillary thyroid cancer (PTC) is the most common type of thyroid cancer, accounting for roughly 80% of cases. It typically affects adults aged 30–50 and is strongly associated with prior neck radiation exposure.
Despite its frequency, PTC generally has an excellent prognosis with appropriate treatment.
Last medically reviewed: 1 November 2025
Characteristics
PTC often presents as a painless thyroid nodule, sometimes with enlarged neck lymph nodes. It can also be found incidentally on ultrasound or CT performed for other reasons. Microscopic PTC — tiny cancers found only on pathology — is increasingly common due to imaging.
Certain variants (tall cell, diffuse sclerosing) behave more aggressively, which is why histological subtype matters.
Diagnosis
Ultrasound identifies suspicious features — microcalcifications, irregular margins, taller-than-wide shape — prompting FNAC. Cytology cannot always distinguish benign from malignant follicular lesions, which is why surgical pathology remains the definitive diagnosis.
Preoperative neck ultrasound assesses lymph nodes; CT or other imaging is reserved for larger or higher-risk tumours.
Treatment and prognosis
Standard treatment is surgery: lobectomy for low-risk small tumours, total thyroidectomy for larger or higher-risk disease, often with central neck lymph node dissection. Post-operative radioactive iodine is used selectively for intermediate- or high-risk features.
Long-term follow-up uses suppressed TSH, thyroglobulin and neck ultrasound. The vast majority of patients do well; recurrence, when it happens, is usually in the neck and treatable.
Frequently asked questions
Is papillary thyroid cancer curable?
Yes, for the majority of patients it is effectively cured with surgery, with or without radioactive iodine. Long-term surveillance continues because late recurrence, while uncommon, is possible.
Do I need total thyroidectomy?
Not always. For small, low-risk tumours confined to one lobe, lobectomy may be sufficient. Your surgeon weighs tumour size, lymph nodes, variant and patient factors.
Why is my TSH kept low after surgery?
Suppressing TSH reduces stimulation of any residual thyroid tissue — a standard part of differentiated thyroid cancer follow-up. It requires monitoring to avoid side effects of over-replacement.
References & further reading
This page is based on established medical knowledge and guidelines from authoritative sources. Always consult a qualified clinician for personal medical advice.
Ready to discuss your thyroid health?
Book a specialist consultation — in person or by teleconsultation.