Abstract

HERRERA, Francisco et al. Diagnostic performance of fine needle aspiration in patients with single thyroid nodule at Hospital Universitario del Caribe, Cartagena, Colombia. rev. colomb. cir. [online]. 2014, vol.29, n.4, pp.313-318. ISSN 2011-7582.

Background: Fine needle aspiration cytology is the best diagnostic tool to choose the conduct regarding a thyroid nodule. Determination of the diagnostic performance of this procedure supports this fact and helps to recognize the behavior of this pathology in our environment. Methods: A retrospective review of medical records of patients with the diagnostic impression of thyroid nodule in the period of 2007 – 2013 that had fine needle aspiration cytology and were managed surgically was conducted. Sensibility, specificity, positive predictive value, negative predictive value, diagnostic accuracy and concordance were determined in these patients. Results: The study population was conformed by 161 patients. The following parameters were determined: sensibility, 54,5%; specificity, 98%; false positive rate, 1.8%; false negative rate, 4.5%; positive predictive value, 75%; negative predictive value, 98%; diagnostic accuracy, 93%; and Kappa index, 0.598 excluding micro carcinomas. Conclusion: Fine needle aspiration cytology is a diagnostic test with high specificity for the diagnosis of thyroid gland nodular lesions. Nonetheless, the variability of the anatomic lesions and the fact that it is an operator dependent test decreases its sensibility, and therefore the histopathologic diagnosis is the gold standard for the definitive diagnosis of thyroid gland lesions.

Keywords : Thyroid gland; thyroid nodule; biopsy; fine-needle; cytology; diagnosis; sensitivity and specificity.

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