How does the depth of lesions affect the prognosis of primary squamous cell carcinoma (SCC)?

Updated: Jul 08, 2020
  • Author: Talib Najjar, DMD, MDS, PhD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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With increasing depth of invasion of the primary SCC tumor, the risk of local recurrence and nodal metastasis increases and the rate of survival decreases. Lesions with a depth of less than 2 mm rarely metastasize; those with a depth of invasion of 2-4 mm have a historical recurrence rate of 5.3% and a metastasis rate of 6.7%.

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