非浸润性乳管癌包括二种 :1 )局限于乳管内与浸润癌相连续自浸润癌边缘向周围扩展的乳管内癌 ,即所谓的乳管内进展灶 ;2 )无间质浸润灶的组织学分类所谓的真正乳管内原位癌( pureDCIS)。针对乳管内进展灶这一定义 ,有必要加以注意。Holland等着眼于浸润癌及其附近非浸润癌的密 There are two types of non-invasive ductal carcinoma: 1) intramammary ductal carcinoma, which extends beyond the margins of the infiltrating carcinoma, which is confined to the ductal and infiltrating cancers, the so-called intraductal ductal foci; and 2) the tissue of the interstitial infiltrating duct Learn what it really calls pureDCIS. For the definition of intraluminal lesions, it is necessary to pay attention. Holland et al. Looked at the density of infiltrating cancers and nearby non-invasive cancers