This study is based on an analysis of 787 consecutive cases of cancer of the breast registered in the Tumor Clinic at the University of Illinois Hospitals between the years 1942 and 1955. Of these, only 573 cases are reported on. The remaining 214 represented cases not operated on or those treated elsewhere and referred here in their terminal stages for advice on additional therapy. The total number, 787, was used only in computing the over-all sex incidence. Of the 573 cases, not all had sufficient data for thorough recording, such as an accurate description of the size of the tumor. Consequently, in each analysis the total number of cases used will be indicated. In computing five-year survival rates, only those cases operated on prior to July, 1950, and clinically free of disease are included in this group. All cases lost to follow-up study, or with evidence of recurrent disease,
DAVIS JB. Carcinoma of the Breast. AMA Arch Surg. 1957;74(5):758–769. doi:10.1001/archsurg.1957.01280110100014
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