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Dr. Anthony C. Cipollaro, New York: It has been a great privilege to listen to so many renowned experts in the field of cancer. Although it is difficult to discuss all these papers, I shall reiterate some of the more important points pertaining to the general subject of cutaneous cancer.
Drs. Stout and Sachs have described the essential features of the main varieties of cancer and in the main are in agreement on all important details. I think that in a discussion of cancer of any organ or of any type it is always important to emphasize the danger of metastasis. It is true that basal cell epitheliomas do not metastasize except in extremely rare instances, as Dr. Stout said, but squamous cell epitheliomas do metastasize, especially when they are either neglected or poorly treated. Bowen's disease has been considered to be a precancerous dermatosis, but, as Dr. Stout pointed