# Papillary Thyroid Cancer

URL: https://thethyroidologist.com/conditions/papillary-thyroid-cancer/
Section: Conditions
Last medically reviewed: 2025-11-01

> Papillary thyroid cancer is the most common thyroid cancer. Features, diagnosis by FNAC, surgical treatment, and prognosis.

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.

## 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.

## Disclaimer

The content on this website is for general educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your specific condition.

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