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6: Thyroid nodules and thyroid cancer.

Emily J Mackenzie¹, Robin H Mortimer

¹Department of Endocrinology, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia.

The Medical Journal of Australia

|February 27, 2004

Summary

This summary is machine-generated.

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Thyroid nodules are common, with most being benign. While thyroid cancer is rare, early diagnosis and treatment like total thyroidectomy offer an excellent prognosis.

Area of Science:

Endocrinology
Oncology
Diagnostic Imaging

Background:

Thyroid nodules are highly prevalent, detected in approximately 25% of ultrasounds, though clinically apparent in only 5%.
Thyroid cancer accounts for about 5% of thyroid nodules, with well-differentiated types showing excellent long-term survival rates.

Observation:

Papillary thyroid cancer incidence is rising in Eastern Australia.
Fine-needle aspiration biopsy is the most cost-effective method for diagnosing thyroid nodules.

Findings:

Total thyroidectomy followed by radioiodine ablation is recommended for follicular carcinomas and papillary carcinomas larger than 1.0 cm.
Postoperative management involves thyroid hormone doses to suppress thyroid-stimulating hormone levels.

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Implications:

Lifelong follow-up is crucial due to the potential for late recurrences of thyroid cancer.
Despite high prevalence, thyroid nodules generally pose a low risk of malignancy, emphasizing accurate diagnosis.