II. Pathophysiology
- Categorized as a Skin Cancer
III. Risk Factors
- Prolonged Sun Exposure
- Tobacco Smoking (esp. Pipe smoking)
IV. Symptoms
- Recurrent or non-healing Lip Ulcer
V. Signs
- Ulcer with overlying crust
- Borders of ulcer are heaped up
VI. Course
- Contiguous spread of untreated tumors
VII. References
- Diaz in Noble (2001) Primary Care Medicine, p. 1757
- Weinberg (2002) Am Fam Physician 65(7):1379-86 [PubMed]