More than one writer has called attention to the fact that the very results of the campaign to educate the public in the facts of cancer have placed a heavy responsibility on the medical profession. The figures from the Halsted Clinic are typical. During its early years, as the late Joseph Colt Bloodgood noted in one of his last papers, more than 80 per cent of the tumors of the breast treated in it were malignant, whereas in later years almost 90 per cent were benign. That did not mean, he hastened to explain, that the incidence of malignant tumors was decreasing; it merely meant that more and more women were seeking advice for conditions which they had formerly ignored. As this trend has continued, there has come to the physician's attention an increasingly large group of borderline cases in which diagnosis is difficult and the result of diagnosis momentous.
ROMANO SA, McFETRIDGE EM. THE LIMITATIONS AND DANGERS OF MAMMOGRAPHY BY CONTRAST MEDIUMS. JAMA. 1938;110(23):1905–1910. doi:10.1001/jama.1938.02790230021009
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