The value of chest CT for prediction of breast tumor size: comparison with pathology measurement

Table 1 Clinicopathologic characteristics of the study subjects

Characteristics	Tumors <20 mm on CT ( n= 139)	Tumors ≥20 mm on CT ( n= 146 )	P values
Age (years)^a	50.1±9 (31–78)	47.5 ± 10 (20–79)	0.249^b
Stages
IA	106	9
IB	0	0
IIA	28	74
IIB	0	29
IIIA	1	19	0.724^c
IIIB	1	1
IIIC	3	14
T stages
T1	138	13	0.267^c
T2	0	124
T3	0	8
T4	1	1
N stages
N0	107	81
N1	28	33	0.467^c
N2	1	18
N3	3	14
ER status
Positive	95	81	0.164^c
Negative	44	65	0.164^c
PR status
Positive	70	62	0.020⁺⁺
Negative	69	84	0.020⁺⁺
HER-2 amplification
Positive	75	79	0.113^c
Negative	64	67
Unknown
Histopathologic type
Invasive ductal carcinoma	119	126
Invasive lobular carcinoma	6	7
Others^d
Histologic grade^e
Grade 1	26	8	0.091^c
Grade 2	82	73
Grade 3	31	65
Unknown
Operation type
Mastectomy	17	33	0.051^c
Breast conserving surgery	122	113	0.051^c

^a Mean values with standard deviations (numbers in parentheses are ranges).
^b Two-sample t- test.
^c Chi-squared test.
^d Others including invasive papillary carcinoma (n= 6), invasive micropapillary carcinoma (n= 5), mucinous carcinoma (n=4), metaplastic carcinoma (n=4), invasive tubular carcinoma (n= 3), invasive apocrine carcinoma (n= 3), neuroendocrine carcinoma (n=1), invasive carcinoma with squamous differentiation (n=1).
^e Scarff-Bloom-Richardson grade system.
ER, estrogen receptor; PR, progesterone receptor.

ISSN: 1477-7819