A 29-year-old woman had a 2.5-mm Breslow thickness melanoma removed from her right shin. She was referred for wide local excision of the scar and consideration of sentinel node biopsy. In what proportion of patients with a negative sentinel node biopsy does nodal recurrence subsequently develop in the same lymph node basin?

A 29-year-old woman had a 2.5-mm Breslow thickness melanoma removed fr

1.	A 29-year-old woman had a 2.5-mm Breslow thickness melanoma removed from her right shin. She was referred for wide local excision of the scar and consideration of sentinel node biopsy. In what proportion of patients with a negative sentinel node biopsy does nodal recurrence subsequently develop in the same lymph node basin?
A.	<1%
B.	1 4%
C.	5 9%
D.	10 14%
E.	15 25%
Answer» C. 5 9%

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