. Elementary and dental radiography . reat deal of discussion as toCancer. whether X-rays can, or cannot, produce cancer, but in the face of such reports as Dr. C. A. Porters* Ido not see how anyone can dispute it. According to the highest author-ities. X-rays can, and have, produced carcinoma. In 1907 Dr. Porter re- * The Surgical Treatment of X-Ray Carcinoma and Other Severe X-RayLesions, Based Upon an Analysis of Forty-seven Cases. THE DANGERS OF THE X-RAY 275 ported eleven cases of unquestionable X-ray cancers, six of whichproved fatal. Cancer usually follows a chronic dermatitis, occurrin
. Elementary and dental radiography . reat deal of discussion as toCancer. whether X-rays can, or cannot, produce cancer, but in the face of such reports as Dr. C. A. Porters* Ido not see how anyone can dispute it. According to the highest author-ities. X-rays can, and have, produced carcinoma. In 1907 Dr. Porter re- * The Surgical Treatment of X-Ray Carcinoma and Other Severe X-RayLesions, Based Upon an Analysis of Forty-seven Cases. THE DANGERS OF THE X-RAY 275 ported eleven cases of unquestionable X-ray cancers, six of whichproved fatal. Cancer usually follows a chronic dermatitis, occurring at the site ofa former ulcer, though it may result from a very severe acute cancer follows chronic dermatitis the victim is almost invariablyan X-ray operator; when it follows acute dermatitis the victim is usuallya patient who has been exposed to the rays for therapeutic purposes. Even before the formation of cancer, when chronic ulcers appear,operation after operation becomes necessary. These operations consist of. Fig. 309. X-ray Cancer. a curettement of the ulcer and skin grafting. With the formation of can-cer commences amputation. First one finger, then another, then two more,then a hand, both hands, an arm. A welcome death, due usually to theformation of metastatic cancers throughout the vital organs of the body,is the next step of the progressive case. I print reports here by Dr. Porter of two more or less typical casesof fatality due to X-ray lesions: Case XXXI—Man, 32 years old, who, after three years of X-raywork, suffered from severe lesions on both arms, breast, neck and 1901 there began a slowly growing ulceration of the back of the righthand, which, by the middle of 1902, had become a gangrenous epithelioma iglands enlarged at the elbow and in the axilla. Amputation at the shoul-der; axillary glands removed, and found full of squamous-celled car^cinoma. Sound healing. In December, 1904, a typical cancer of the lowerlip and another of t
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