Abstract
Control of the hazards of industry is the constant concern of the industrial surgeon. The early diagnosis of chronic lesions of the lip also commands attention, because cancer of the lip is frequently observed. In the 2 cases herein described there is a similar history of exposure to arc welding with the resultant formation of typical lesions of the lip. Since this condition has not been reported and has been an industrial hazard, it seems appropriate to record these cases. REPORT OF CASES Case 1.— D. J. E., a sergeant aged 31, entered Fort Monmouth Station Hospital on May 18, 1948, because of a lesion of the lower lip on the left side. The condition had been noted by two medical officers, who advised biopsy. The patient had noted a scab on the left side of his lower lip since November 1945. A crust about 3 mm. in diameter would
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