Primary Treatment of Breast Cancer

Patey procedure-preserves pectoralis major, but sacrifices pectoralis minor to remove level I, II, and III lymph nodes. Node-negative 10-year survival is 82% with 5% local recurrence; node-positive 10-year survival is 48%. The Scanlon modification divides the pectoralis minor, allowing removal of level III nodes, but

sparing the lateral pectoral nerve to the pectoralis major.