II. Pathophysiology

  1. Categorized as a Skin Cancer

III. Risk Factors

  1. Prolonged Sun Exposure
  2. Tobacco Smoking (esp. Pipe smoking)

IV. Symptoms

  1. Recurrent or non-healing Lip Ulcer

V. Signs

  1. Ulcer with overlying crust
  2. Borders of ulcer are heaped up

VI. Course

  1. Contiguous spread of untreated tumors

VII. References

  1. Diaz in Noble (2001) Primary Care Medicine, p. 1757
  2. Weinberg (2002) Am Fam Physician 65(7):1379-86 [PubMed]

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