Prognosis and treatment of non-metastatic primary and secondary breast angiosarcoma: a comparative study

BMC Cancer

Table 1 Comparison of patient characteristics

Parameters	Primary (%)	Secondary (%)	p
Age (years)
Median	50–54	70–74
< 60	141 (64.7)	29 (16.8)
≥ 60	77 (35.3)	144 (83.2)	<0.001
Race
Non-white	40 (18.3)	13 (7.5)
White	178 (81.7)	160 (92.5)	0.002
Site
Outer quandrant	40 (18.3)	21 (12.1)
Inner Quandrant	37 (16.9)	15 (8.7)
Central	14 (6.4)	12 (6.9)
Overlap^a	62 (28.4)	31 (17.9)
NOS^b	65 (30)	90 (52)
Nipple	0 (0)	4 (2.4)	<0.001
Tumor spread^c
Local	179 (82.1)	84 (48.6)
Regional	39 (17.9)	89 (51.4)	<0.001
Tumor grade
G1	34 (15.6)	13 (7.5)
G2	54 (24.8)	22 (12.7)
G3	70 (32.1)	100 (57.8)
Gx	60 (27.5)	38 (22)	<0.001
Number of primaries^d
1	179 (82.1)	0 (0)	<0.001
2	33 (15.1)	111 (64.2)
≥ 3	6 (2.8)	62 (35.8)

^aMore than one quandrant but less than half breast size
^bEntire breast: ¾ or more of breast involved with tumor, or multiple tumors in different subsites
^cLocal: tumor spread limited to the organ of origin; regional: beyond the limit of the organ of origin
^dNumber of different primary tumors developed in an individual by the time of last data collection in SEER database

ISSN: 1471-2407