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Sonographic-pathologic correlation in an ultrasound-guided fine needle aspiration of a thyroid nodule: Concordant or discordant?

Authors: Qays A. Hassan, Abdullateef A. Asghar and Mohammad A. Hadi

Int J Med Res Health Sci.148-158 | pdf PDF Full Text

Thyroid nodules are common medical problem caused by a variety of thyroid disorders. The aims of this
study was to evaluate the sonographic-pathologic concordance and discordance of thyroid nodules and
to demonstrate how ultrasound is integrated with the fine needle aspiration to provide valuable
information that can be used to improve patient care. This prospective study was done on 76 patients
with thyroid nodules referred for ultrasound examination. From 76 patients involved in this study and
underwent ultrasound-guided fine needle aspiration cytology, 10 patients have inadequate aspirates and
thus were excluded. Of the remaining 66 patients that were included in our study, only 6 patients had
thyroid carcinoma (9%). Thyroid cancer was highest in age group of 50-59 years (50%). Five patients of
thyroid carcinoma (83.3%) had solitary nodule more than 10 mm in largest dimension and only one
patient (16.7%) had multiple thyroid nodules. After sonographic-pathologic correlation, the
concordance and discordance rate presented as: (1) concordant benign (98.11%), (2) concordant
malignant (71.42%), (3) discordant benign (14.28%), (4) discordant malignant (1.88%) and (5)
borderline or high risk (30.76%). We conclude that careful sonographic-pathologic correlation and
appropriated post-biopsy management will allow detection of a substantial number of false negative
results immediately after needle biopsy by identifying discordant lesions prospectively, thereby avoiding
delays in the diagnosis of cancer.

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