| Factor | Relative risk |
| Involved margins | × 3-4 |
| Extensive in situ component | × 3 |
| Patient's age <35 (v age >50) | × 3 |
| Lymphatic or vascular invasion | × 2 |
| Histological grade II or III (v grade I) | × 1.5 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.