الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
High-frequency ultrasound has become the examination of choice for the diagnosis of superficial lymph nodes in clinical practice. The commonly used high frequency ultrasound can display the size, location and shape of the lesion and play important roles in differential diagnosis of lymph nodes. However, the indices, given by these methods and reflecting the benign or malignant lesions, always overlap in large measure, therefore causing difficulties in differentiation. US-guided fine needle aspiration, core biopsy or excision can be added if suspicious lymph nodes are found. A non-invasive technique is required for precise differentiation between benign and malignant lymph nodes. Our study aimed at achieving better differentiation between benign and malignant enlarged axillary lymph nodes by Ultrasound elastography and Diffusion-weighted imaging as complementary techniques to the routinely used conventional ultrasound. This study included 30 patients; 22 females and 8 males with age range from 26 to 57 years. Initially, enlarged axillary lymph nodes were examined by B mode ultrasound for characterization of morphological criteria; shape, size, cortical thickness and presence of fatty hilum, but alone, those were not accurate enough to differentiate. We found that B mode ultrasound had 77.8% sensitivity, 66.7% specificity and 73.3% accuracy.