Correlation and predictive value of pathological complete response and ultrasound characteristic parameters in neoadjuvant chemotherapy for breast

Table 1 Comparison of ultrasound characteristics between pathological complete response group and non-pathological complete response group

Ultrasonic feature	PCR group, n = 59	Non PCR group, n = 59	χ2	P value
Edge of lesion			1.374	0.241
Burr	41 (69.49)	72 (60.50)
Smooth	18 (30.51)	47 (39.50)
Calcification lesion			1.532	0.216
Yes	27 (45.76)	43 (36.13)
No	32 (54.24)	76 (63.87)
Peripheral echo halo			2.053	0.152
High and low echo dizziness	32 (54.24)	51 (42.86)
No	27 (45.76)	68 (57.14)
Posterior echo			6.767	0.009
Attenuation	38 (64.41)	52 (43.7)
Unchanged	21 (35.59)	67 (56.3)
Tumor morphology			1.464	0.226
Quasi-circular object	11 (18.64)	32 (26.89)
Irregular	48 (81.36)	87 (73.11)
Lesion diameter			6.769	0.006
≥ 2.0 cm	36 (61.02)	48 (40.34)
< 2.0 cm	23 (38.98)	71 (59.66)
Alder blood flow grading			4.448	0.035
≥ II stage	41 (69.49)	63 (52.94)
< II stage	18 (30.51)	56 (47.06)

Data are n (%). PCR: Pathological complete response.