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To the Editor.—
Dr. Cohen's opinion concerning the efficacy of ultrasound therapy and warts is understandable. As indicated in my reports, the "success" rate is significant in that these patients had received other treatments previously with apparent failures. We know that the history of wart therapy is legendary with mystical old wive's tales of spontaneous cures. However, as an additional tool in our armamentarium, without this being another destructive or painful method, ultrasound has proved a satisfactory means of treatment. This is particularly evident because of its innocuous effect on normal tissues.Regarding the advisability of a doubleblind procedure, this actually was done prior to the publication of the preliminary report, but because of the small number of cases followed, it was not presented. Finally, one would encourage others to investigate the procedure further in an effort to corroborate the usefulness of ultrasound in the treatment of warts.
Kent H. REPLY TO DR. COHEN. Arch Dermatol. 1969;100(4):489. doi:10.1001/archderm.1969.01610280107027