作者收集了日本四国肿瘤中心1966年至1977年手术治疗的乳腺癌427例,复习了每个病例的肿瘤切片,以其主要成份决定组织类型,研究其组织类型与预后的关系。按日本规定的分类,其中14例(3.3%)为非浸润性癌,均为导管内癌,五年生存率100%。浸润性癌:乳头状癌112例(26.4%),五年生存率90.2%,髓样癌90例(21.2%),五年生存率69.3%,硬癌176例(41.5%),五年生存率67.8%.五年生存率 The author collected 427 cases of breast cancer treated by the Cancer Center of Japan from 1966 to 1977, reviewed the tumor sections of each case, determined the type of tissue with its main components, and studied the relationship between its tissue type and prognosis. According to the classification provided by Japan, 14 cases (3.3%) were non-invasive cancers, all of which were intraductal carcinomas. The five-year survival rate was 100%. Invasive carcinoma: 112 cases (26.4%) of papillary carcinoma, 5-year survival rate of 90.2%, 90 cases of medullary carcinoma (21.2%), 5-year survival rate of 69.3%, 176 cases of hard cancer (41.5%), 5-year survival The rate of 67.8%. Five-year survival rate