This article reviews practical and theoretical aspects of margin assessment for surgically excised ductal carcinoma in situ of the breast. Different methods of assessing surgical margins are discussed, including selected tangential sections, the margin shaving, and cavity peel methods. Criteria for margin adequacy and the relevance of margin status in the selection of cases for breast conservation are discussed in the context of other important risk factors for local failure.
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Millar et al. (2001) studied this question.