Telangiectasia develops subsequent to roentgen-ray and radium reactions in a certain percentage of cases. The exact percentage is unknown; it is possibly small; it is probably smaller with filtered than with unfiltered radiation; it is greater with severe than with mild reactions. But telangiectasia is common—unnecessarily common. This is due, partly, to the universal use of roentgen rays for various purposes, and partly to the fact that many physicians do not appear to appreciate the importance of avoiding roentgen-ray or radium reactions, except, of course, when such reactions are justified, as, for instance, when treating epithelioma.
There is reason to believe that telangiectasia never develops in the absence of an antecedent reaction. This reaction, however, may consist of only an exceedingly mild and evanescent erythema, a reaction that may be unnoticed because of careless inspection, or that may be masked as well as enhanced by topical applications.
When telangiectasia develops
MacKEE GM, ELLER JJ. VARIATIONS OF CUTANEOUS TOLERATION FOR ROENTGEN RAYS. JAMA. 1926;87(19):1533–1537. doi:10.1001/jama.1926.02680190009003
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