De-escalation of surgical and radiation treatment in elderly luminal breast cancer patients, single institution report and review of the evidence

Table 1 Patient characteristics

Total number	100
Age (years), median	81 (73–95, IQR 7)
Histology (%)
IDC	69
ILC	13
Mucinous	15
Mixed	3
Tumor size (mm), median	13 (2–32, IQR 8)
cN0	100%
Hormone Receptor status
	99% positive 1% negative
Margin*
	3% positive 97% negative
Lymphovascular invasion **
	95% negative
	5% positive
Systemic endocrine treatment
	20% no
	80% yes
KI 67 (%), mean ***	10 (1–60, IQR 7)
Luminal A (KI67 < 15%)	79%
Luminal B	21%

ISSN: 1477-7819