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Original Article
- Risk of Malignancy in Thyroid Nodules 4 cm or Larger
- Uchechukwu C. Megwalu
- Endocrinol Metab. 2017;32(1):77-82. Published online February 6, 2017
- DOI: https://doi.org/10.3803/EnM.2017.32.1.77
- 4,424 View
- 62 Download
- 17 Web of Science
- 17 Crossref
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Abstract
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PubReader Background Several authors have questioned the accuracy of fine-needle aspiration cytology (FNAC) in large nodules. Some surgeons recommend thyroidectomy for nodules ≥4 cm even in the setting of benign FNAC, due to increased risk of malignancy and increased false negative rates in large thyroid nodules. The goal of our study was to evaluate if thyroid nodule size is associated with risk of malignancy, and to evaluate the false negative rate of FNAC for thyroid nodules ≥4 cm in our patient population.
Methods This is a retrospective study of 85 patients with 101 thyroid nodules, who underwent thyroidectomy for thyroid nodules measuring ≥4 cm.
Results The overall risk of malignancy in nodules ≥4 cm was 9.9%. Nodule size was not associated with risk of malignancy (odds ratio, 1.02) after adjusting for nodule consistency, age, and sex (
P =0.6). The false negative rate for FNAC was 0%.Conclusion Nodule size was not associated with risk of malignancy in nodules ≥4 cm in our patient population. FNAC had a false negative rate of 0. Patients with thyroid nodules ≥4 cm and benign cytology should not automatically undergo thyroidectomy.
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Citations
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