2016_Head & Neck COURSE BOOK

ORAL CAVITY MORPHOLOGY

Thickness of the lesion ≠ depth of infiltration

Tumor Thickness

5-year Disease Survival (%)

Treatment Failure (%)

< 2 mm 2-8 mm > 8 mm

97

2

83

45

65

45

Spiro et al., Am J Surg 1986

Shah et al., Oral Oncol 2009

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