An ulcerating plaque of the lower lip.
Hannah L ZuercherJane MessinaLing ZhangHala DaouLucia Seminario-VidalPublished in: Clinical and experimental dermatology (2022)
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.