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Year : 2022  |  Volume : 21  |  Issue : 2  |  Page : 155-159

The role of neutrophil to lymphocyte and platelet to lymphocyte ratios in diagnosing thyroid nodule

Department of Surgery, Al-Kindy Teaching Hospital, Baghdad, Iraq

Correspondence Address:
Dr. Ali Rodan Shuwelif
Al-Kindy Teaching Hospital, Palestine Street, Baghdad
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mj.mj_46_22

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Background: Thyroid nodule is a common clinical finding and may be associated with a 5%–7% risk for malignancy. Methods for the detection of malignancy had their own drawbacks, neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) may give a promising result to solve this dilemma. The Aim of the Study: This study aims to evaluate NLR and PLR as predictors of malignancy in solitary thyroid nodules. Also, to estimate their effect on tumor size, lymph node metastasis, and extrathyroidal extension. Patient and Methods: Prospective cohort study conducted at Major Teaching Hospital over a period of 1 year. Patients with solitary thyroid nodules were included in the study and according to histopathological results divided into two groups (A: Malignant and B: Benign), blood samples were drawn from participants, and measurement of lymphocyte, neutrophil, platelet, NLR, and PLR was done. Results: Both NLR and PLR were higher in cases of malignancy with a cutoff point for NLR >2.9 associated with 84.8% sensitivity (SN) and 71.4% specificity (SP), while PLR >140.15 associated with 87.9% SN and 71.4% SP. High NLR is further associated with larger tumor size. Conclusion: Both NLR and PLR are good predictors of malignancy of thyroid nodules. NLR of more than 2.9 is associated with larger-size tumors.

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