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The incision described is an adaptation of the principles of the well-known Dowd operation to the removal of a growth involving both upper and lower lips. This readily appears from the similarly-lettered sketches presented herewith.
In the Dowd operation, as in its predecessor, the Malgaigne, it is usually necessary to excise a triangle (E F G Fig. 2), from the upper half of the cheek in order that the tension necessary to bring the lower flaps together may not produce a wrinkle in this location. In the absence of involvement of the upper lip this triangle may be taken out at any convenient point. If, however, there is involvement of the upper lip this triangle may be made of such size and placed in such a location as to remove it (E F G
SUTTON WS. A NEW INCISION FOR EPITHELIOMA OF UPPER AND LOWER LIPS OF SAME SIDE. JAMA. 1910;55(8):647. doi:10.1001/jama.1910.04330080013006
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