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Head Neck. 2015 Feb;37(2):260-4. doi: 10.1002/hed.23587. Epub 2014 Apr 3.

Thyroid autoimmunity and risk of malignancy in thyroid nodules submitted to fine-needle aspiration cytology.

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  • 1Department of Experimental Medicine, Unit of Endocrinology, "Sapienza" Università di Roma, Rome, Italy.

Abstract

BACKGROUND:

Whether the risk of cancer is increased in patients with chronic autoimmune thyroiditis is a controversial issue.

METHODS:

Between May 2005 and October 2012, 3777 fine-needle aspiration cytologies (FNACs) were performed on 2562 patients. Serum FT4, thyroid-stimulating hormone (TSH), anti-thyroglobulin antibody (TgAb), and anti-thyroperoxidase antibody (TPOAb) were determined.

RESULTS:

Patients with suspicious cytology were younger and presented smaller maximum lesion diameter. In patients with TgAb positivity, suspicious cytology was detected more frequently (9.4%) than patients without TgAb (5.7%; p = .04). No significant difference was recorded between benign and suspicious cytology in the positive TPOAb rate. Risk factors for suspicious cytology were younger age (odds ratio [OR], 0.94), smaller maximum diameter (0.95), single lesion (1.85), microcalcifications (3.45), and TgAb (1.74). Mixed solid/fluid content resulted as being a protective factor (0.34). According to multivariate logistic regression analysis, age, mixed content, and microcalcification confirmed significance.

CONCLUSION:

Thyroid nodule malignancy in patients with Hashimoto thyroiditis is not more frequent than in patients without thyroiditis.

© 2014 Wiley Periodicals, Inc.

KEYWORDS:

Hashimoto disease; autoimmunity; biopsy; cytology; fine-needle aspiration cytology; thyroid neoplasms

PMID:
24375752
[PubMed - in process]
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