A middle-aged man presented to a cancer centre with a painful, ulcerating plaque of the lower lip, which had been diagnosed as squamous cell carcinoma. Computed tomography revealed increased focal… Click to show full abstract
A middle-aged man presented to a cancer centre with a painful, ulcerating plaque of the lower lip, which had been diagnosed as squamous cell carcinoma. Computed tomography revealed increased focal metabolic activity in the lip, and histology revealed spirochaetes.
               
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