Background and Objectives: The thyroid gland is critical in regulating metabolic functions of the body. High resolution sonography is the imaging modality of choice by which normal anatomical and pathological features of thyroid can be demonstrated. In this study the ultrasonographic features of various thyroid lesions in patients with thyroid disorders is evaluated and these sonographic findings were correlated with FNAC.

Method: The present study included 70 patients with clinically palpable thyroid swelling. The patients included in the study were subjected to gray scale and colour Doppler examination of the thyroid gland and fine needle aspiration cytology and histopathological examination.

Stastical Analysis: The data was analysed by SPSS 26.0 with independent chi square test.

Results: It is a cross sectional study in which various sonographic features such as size, echotexture of thyroid gland and nodules were evaluated based on

size, shape, margins, contents, echotexture, calcification and halo. Based on ultrasound these lesions were classified as benign and malignant. FNAC from these lesions were obtained and was sent for evaluation. The FNAC findings are correlated with sonographic findings. Malignant lesions identified as malignant on USG was confirmed as malignant on FNAC also.

Conclusion: Ultrasound is the best imaging modality for thyroid gland. The combination of ultrasonography with FNAC, rather than a single modality, helps detect malignant nodules and timely surgical intervention.