Question 13. 
 
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%