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To the Editor:
In relation to Dr. Peter Long's article, "Behavior of Psoriatic and Normal Skin Transplants," Arch. Derm. 84:593, 1961, I wish to bring to your attention that Dr. Norman Orentreich, of New York University Post-Graduate Medical School and the Skin and Cancer Unit, published an article in 1959 in which he described transplantation of psoriatic and normal skin (Autografts in Alopecias and Other Selected Dermatological Conditions, Ann. N.Y. Acad. Sci. 83:463-479, 1959). In this publication, Dr. Orentreich attributed the appearance of psoriasis in all transplants (performed in rotation from normal to normal, normal to psoriatic, psoriatic to psoriatic, and psoriatic to normal areas) to the Koebner phenomenon. This appears to be the most valid explanation. The type of trauma which Dr. Long used unsuccessfully as control in attempting to induce a Koebner phenomenon was not at all similar to the trauma produced by excision, transplantation, and suturing. Until
March C. BEHAVIOR OF PSORIATIC AND NORMAL SKIN TRANSPLANTS. Arch Dermatol. 1962;85(5):645. doi:10.1001/archderm.1962.01590050075016
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