Table 4. Elderly breast cancer characteristics in the literature.

	Current study	Evron [17]	Litvak [5]	Brunello [16]	Poltinnikov [18]	Laki [15]	Smith [25]	Yood [9]
N	134	135	354	260	106	538	56725	1837
Age	80+	80+	70+	70+	70+	70+	65+	65+
Median age	84	83	N/A	75.6 (mean)	76	N/A	76	N/A
Palpable	41%	80%	46%	N/A	N/A	N/A	N/A	N/A
T1	53%	90% T1 and T2	70% Stage I-II	53%	85%	41%	N/A	71%
T2	17%	90% T1 and T2	70% Stage I-II	43%	15%	49%	N/A	29%
T3	4%	N/A	N/A	3%	0%	N/A	N/A	N/A
IDC	64%	67%	71%	73%	90%	78%	N/A	N/A
ILC	10%	11%	12%	13%	10%	14%	N/A	N/A
ER positive	83%	76%	45%	80%	78%	84%	N/A	74%
Her-2 amplified	10%	N/A	N/A	N/A	22%	N/A	N/A	N/A
Partial mastectomy	49%	N/A	47%	55%	100%‡	72%	59%	47%
Radiation therapy*	47%	N/A	45%	65%	100%‡	100%	74%	74%
Antiestrogen therapy*	93%	N/A	67%	N/A	90%	N/A	N/A	N/A
Axillary staging performed	90%	N/A	N/A	90%	69%	89%	N/A	N/A
Nodal metastases∧	25%	44%	N/A	36%	23%	31%	N/A	N/A
Median follow-up (months)	34	70	N/A	30	55	91	N/A	N/A
Recurrence	4%	13%	N/A	N/A	N/A	9%	N/A	N/A

Table 4 legend:

N = Number of patients in sample; N/A = not available; IDC = invasive ductal carcinoma; ILC = invasive lobular carcinoma; ER = estrogen receptor.

^*Calculated as the percentage of patients eligible for therapy, rather than absolute numbers receiving therapy.

^∧Calculated as the percentage of patients undergoing nodal staging who were found to have nodal metastases .

^‡This study examined only women undergoing partial mastectomy with adjuvant radiation therapy.