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MAX WOLF, M.D.

AMA Arch Derm. 1955;71(5):640-641.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Most American dermatologists perform biopsies with scalpels or with punches. The diameter of the American punch is wider at its base than at the cutting edge. The tapered circumference gives the punch a conical shape. Penetration of the skin with the punch is produced by a rotary movement of the heavy handle of the punch. European dermatologists prefer motor-driven punches. The cylindrical punch-knife, also called trepan, was originally described by E. Kromayer in 1905.¹ The shaft of the punch-knife is attached to a handpiece which is connected through a flexible cable to a mounted high-speed dental motor. Since 1927, I have used a motor whose speed was controlled with the aid of a rheostat knob located on the base, and since 1953, a foot-controlled rheostat has been used.

The following technique is employed: After disinfecting and anesthetizing the selected site, the punch fixed to the handpiece is . . . [Full Text PDF of this Article]

Author Affiliations
New York

From the Department of Dermatology and Syphilology of the New York University Post-Graduate Medical School (Dr. Marion B. Sulzberger, Chairman) and the Skin and Cancer Unit of the University Hospital.

Footnotes
The rotary punch is made for us by Emesco Dental Co., New York (Figure).

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