{'fraction_non_alphanumeric': 0.02117863720073665, 'fraction_numerical': 0.001841620626151013, 'mean_word_length': 5.319767441860465, '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}}
Cavity Shave Margins in Breast Cancer.

To the Editor: The results of the clinical trial reported by Chagpar et al. (Aug. 6 issue)1 may be broadly applied to help both surgeons and patients avoid positive margins and reoperation after partial mastectomy for breast cancer. However, in this study, both the original resection of margins and the additional resection of circumferential margins (in the shave group) were simply defined as the standards according to the usual practice of four surgeons. The exact original and additional margins for resection were not standardized for clinical practice. There is no question that surgeons at the Yale Cancer Center were experienced in performing breast-conserving operations. Nevertheless, in their clinical practices in other centers, how can surgeons determine the proper resection of both original and additional margins? Since frozensection examination was not used in the intraoperative pathological evaluation, can the authors clearly address the exact criterion used to determine the original margins for resection? Long Jiang, M.D.