A 76-year-old woman presents for evaluation of a long-standing sore just inside her lower lip. She has been referred by her dentist.
The patient is otherwise in good health and denies any exposure history.
Which of the following would you include in the differential?
B. Squamous cell carcinoma.
C. Contact dermatitis to oral hygiene products.
D. Oral lichen planus.
E. Aphthous stomatitis.