. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students . lcer was noticed. After three ex-posures, of three minutes each, the redness and swelling of this ringhad diminished. After six exposures, there was likewise, by measure-ment, a slight diminution in the size of the ulcer. The order of healing seems to be as follows : the ulcer heals up 440 THE ROENTGEN RAYS IN MEDICINE AND SURGI from the bottom, and then afterward closes over. This closing in ofthe surface, though delayed at the beginning, takes p
. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students . lcer was noticed. After three ex-posures, of three minutes each, the redness and swelling of this ringhad diminished. After six exposures, there was likewise, by measure-ment, a slight diminution in the size of the ulcer. The order of healing seems to be as follows : the ulcer heals up 440 THE ROENTGEN RAYS IN MEDICINE AND SURGI from the bottom, and then afterward closes over. This closing in ofthe surface, though delayed at the beginning, takes place rapidly afterit is fairly under way. The total duration of the treatment in thispatient was nearly six weeks. During the last two weeks it was appliedfor only one minute a day, and probably this was unnecessary. Case II. A. B., a man fifty-five years of age. Referred to me byDr. David W. Cheever. Rodent ulcer of about thirty years operations, had been done, in one of which one of the eyes hadbeen removed. His experienced surgeon finally decided that furtheroperation was impossible, and referred the patient to me. The growth. Fig. 240. J. H. Rodent ulcer after treatment. involved the whole of the orbit, the eyebrow, and the side of the nose^and extended below the orbit on to the cheek, an area of 7 x 8 has healed over under treatment by the X-rays. Some of the growths I have treated were typical epithehomas;others were of the rodent ulcer type; still others were ulcers that wereindurated and had persisted for months, or in some cases for years;clinically these were epitheliomas, but when a specimen was examinedunder the microscope they did not present the appearances typical ofepithelioma, and were reported by Dr. Mallory either as chronic inflam-matory tissue or plasmoma. It is noteworthy that all of these cases,however, yielded to treatment by the X-rays. THERAPEUTIC USES OF THE X-RAYS 441 The exposure of external growths, with the target at a distanc
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