{'fraction_non_alphanumeric': 0.015358361774744027, 'fraction_numerical': 0.0, 'mean_word_length': 5.178947368421053, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Author ’ s Accepted Manuscript The Role of US in Breast Cancer Screening : The Case For and Against Ultrasound

Mammography is the gold standard for breast cancer screening. However, with increasing awareness among patients and health care providers of mammography limitations especially in dense breasts, supplemental screening for breast cancer with ultrasound and MRI has been expanding. The roles of both in screening need to be reexamined. This article reviews the efficacy, utility and feasibility of ultrasound as a screening tool for the early detection of occult breast cancer.