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Article Abstract
Background: Current data regarding the risk of malignancy in a large thyroid nodule with benign fine-needle aspiration biopsy(FNAB) is conflicting. We investigated the impact of patient age on the risk of malignancy in nodules≥4 cm with benign cytology.
Methods: We performed a single-institution retrospective review of patients who underwent surgery from 07/2008-08/2019 for a cytologically benign thyroid nodule ≥4 cm. The relationship between malignant histopathology and patient and ultrasound features was assessed with multivariable logistic regression.
Results: Of 474 nodules identified, 25(5.3%) were malignant on final pathology. In patients <55 years old, 21/273(7.7%) nodules were malignant, compared to 4/201(2.0%) in patients ≥55. Patient age ≥55 was independently associated with significantly lower risk of malignancy(OR:0.2,95%CI:0.1-0.7,p = 0.011). Increasing nodule size >4 cm and high-risk ultrasound features were not associated with risk of malignancy(OR:1.0,95%CI:0.7-1.4,p = 0.980, and OR:9.6,95%CI:0.9-107.8,p = 0.066, respectively).
Conclusions: Patients <55 years old are 3.7-fold more likely to have a falsely benign FNA biopsy in a nodule≥4 cm.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7708510 | PMC |
| http://dx.doi.org/10.1016/j.amjsurg.2020.05.034 | DOI Listing |
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