A Preliminary Note on the Radium Treatment of New Growths without the Direct Application of Radium

tumours not directly radiated and at a distance from those actually radiated do suffer and disappear when radium is applied. It has been said that these are radiation effects (G. L,. Rohdenburgh and F. D. Bullock, New York Journal of Cancer Research, III, pages 181-191, April, 1918), but there is the law of inverse squares to be considered and the distance from the right side of the chest to the position of vaccination scars on the left upper arm is so great as compared with the 0.10 millimeter or less of distance from the radium tube to the keloid where it was applied without screening other than the metal of the tube, that to my mind this excludes the distant effect in a case of keloid as reported by myself in 1918, to say nothing of the fact that I then used only ten milligrams in all of radium bromide. And in any case one would suppose that if it were a distant effect the rate of effect would vary with the distance from the source of radiation. Yet the keloids in the arm subsided along with the keloid on the chest-wall. In my case of mammary cancer (paper of 1918, Indian Medical Gazette) there was a fungating ulcer in the left breast, and up in the axilla was