DOI: 10.36347/sjams.2019.v07i01.044

Pages: 239-257

A prospective study of 50 patients was conducted on Aloka Arietta S 60 USG machine for Evaluation of Thyroid Nodules on B-Mode Ultrasonography, Color Doppler and Real-Time Elastography. Out of total 50 patients, 72 % were females and 28% were males. Malignant lesions were common in above 45 years age group, while benign lesions were common in 25-45 age groups. 95% of the thyroid lesions were benign and only 5% of the lesions were malignant. Aspect ratio of >1 was associated with malignant thyroid nodules. All the lesions with irregular margins were malignant. Majority of hypoechoic lesions were malignant. Majority of benign nodules showed either peripheral and central vascularity or peripheral vascularity. Majority of malignant nodules showed both peripheral and central chaotic vascularity and central vascularity. All mixed nodules were benign and all spongiform nodules were benign. Majority of benign nodules were solid and all malignant nodules were solid. All of the benign nodules showed peripheral thin and complete halo. None of the malignant nodules showed complete peripheral halo. All the cases showing punctate echogenic foci were malignant nodules. Benign nodules showed macro calcification, peripheral rim calcification and comet tail artifacts. All of the cases showing extra-capsular spread and regional lymph nodal metastases were malignant. TIRADS score 1-2 was suggestive of benign nodules. TIRADS score 3 and 4 was observed in both benign and malignant thyroid nodules, more in benign nodules. TIRADS score 5 was suggestive of malignant nodules. All of the lesions showing elasticity score of 4 were malignant. Elasticity score 3 was seen in both benign (90.9%) and malignant (9.1%) nodules. Elasticity score of 1 and 2 were seen in benign thyroid nodules. Mean strain ratio in malignant nodules was 4.9±1.5. Mean strain ratio in benign nodules was 1.5±0.9. The nodules which were characterized as malignant in ultrasound were confirmed as malignant on FNAC.