Skip to main content

Table 3 Distribution of tumor phenotypes among screening-detected cancers (n = 1,297) and categories of interval cancers (n = 948)

From: Tumor phenotype and breast density in distinct categories of interval cancer: results of population-based mammography screening in Spain

 

Screening-detected cancers

True interval cancers

False negatives

Minimal-sign cancers

Occult tumors

 
 

n = 1,297

n = 455

n = 224

n = 166

n = 103 (%)

P value

Tumor phenotype

      

Luminal A

629 (68.3)

197 (50.9)*

124 (68.1)

79 (59.4)

62 (79.5)

 

Luminal B

139 (15.1)

60 (15.5)

29 (15.9)

18 (13.5)

8 (10.3)

 

HER2

62 (6.7)

53 (13.7)*

14 (7.7)

13 (9.8)

3 (3.8)

 

Triple-negative

91 (9.9)*

77 (19.9)*

15 (8.2)

23 (17.3)

5 (6.4)

<0.001

Unknown

376

68

42

33

25

 
  1. Results are expressed as number (%). Tumor phenotype = Luminal A (ER+/HER2- or PR+/HER2-); Luminal B (ER+/HER2+ or PR+/HER2+); HER2 (ER-/PR-/HER2+); Triple-negative (ER-/PR-/HER2-). *Standardized Pearson residuals with statistically significant deviation between observed and expected values. The distribution of tumor phenotype was compared among the study groups using the two-sided Chi-square test. ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2.