Table 2. Comparison of frozen section versus definitive section of sentinel lymph node biopsy.

Frozen section	Definitive section
	Positive	Negative	Total
Positive	58	2	60
Negative	18	203	221
Total	76	205	281
Sensitivity %			76.30
Specificity%			99.02
False-negative rate %			23.70
Positive prediction rate %			96.70
Negative prediction rate %			91.90
Diagnostic accuracy %			92.88