Diagnosis of thyroid tumors Using ultrasound

Abstract

Thyroid masses should be differentiated on the bases of their nature, i.e. benign or malignant. The diagnosis of thyroid diseases was difficult; beside laboratory investigation which yield some type of thyroid diseases, Nuclear Medicine, Ultrasound, computerized tomography (CT) and magnetic resonance imaging (MRI) have been used. The purpose of this study was to evaluate the correlation between various sonographic features of thyroid nodules and their risk for malignancy in an attempt to suggest an optimal diagnostic approach to further workup of these lesions. In this study 50 patient with thyroid disorder were scanned by ultrasound at radiation and isotope center–khartoum –sudan (RICK ) before histopathology examination (fine needle aspiration biopsy). Hgh-resolution sonography of the thyroid gland was performed with a U/S machine(HDI 4000 scanner (Philips Medical Systems) equipped with acommercially available 8- to 13-MHz linear transducer with color and power Doppler.capability V In this study, specific intra-group analysis of sonographic features among benign and malignant nodules indicates that only the presence of calcification is a statistically significant predictor of malignancy. The presence of intrinsic microcalcifications was 40% sensitive and 85.7% specific in identifying malignancy, and hence the presence of intrinsic microcalcification within a thyroid nodule indicates high risk of malignancy.