Predicting response to neo-adjuvant chemotherapy and assessment of residual disease in breast cancer using contrast-enhanced spectral mammography: a combined qualitative and quantitative approach

Egyptian Journal of Radiology and Nuclear Medicine

Table 8 Correlation of tumor diameter obtained from CESM with histological tumor diameter according to the shrinkage patterns and biomarker status of the tumors

	Histology diameter mean	CESM diameter mean	Mean size discrepancy	Correlation coefficient	P value
Shrinkage pattern
Type I	2.8 cm	2.7 cm	0.89 cm	0.615	0.001*
Type II	3.1 cm	2.5 cm	0.89 cm	0.768	0.001*
Type III	7.4 cm	6.6 cm	1.95 cm	0.640	0.063
Type IV	8.0 cm	8.2 cm	1.37 cm	0.714	0.031*
All types	3.3 cm	3.1 cm	0.85 cm	0.921	< 0.001
Biomarker status
HER2-positive	3.6 cm	3.5 cm	0.56 cm	0.988	< 0.001
Triple negative	1.6 cm	1.5 cm	0.44 cm	0.932	< 0.001
Luminal A	3.8 cm	3.5 cm	1.13 cm	0.834	< 0.001
Luminal B	4.2 cm	3.5 cm	1.17 cm	0.840	0.036
HER2-positive	3.6 cm	3.5 cm	0.56 cm	0.988	< 0.001