EBRO 2017

DCIS: Margins width and focality

1 mm

Group 1 Margin close >1mm

Group 5 Extensive involvement ≥15mm

Group 2 Margin close ≤1mm

Group 4 Minimal involvement ≥1<15mm

Group 3 Focal involvement <1mm

involved mammary duct/lobule

Sigal-Zafrani et al. Mod Pathol, 2004