Objective:To analyze the evaluation value of contrast-enhanced ultrasound (CEUS) combined with automatic volumetric ultrasound in the efficacy of neoadjuvant chemotherapy (NAC) for breast cancer.Methods:A retrospective study was conducted on 98 female patients with breast cancer admitted to Shaanxi Provincial Cancer Hospital from January to December 2022. All patients received 4 cycles of NAC, and underwent conventional ultrasound, automatic volumetric ultrasound, CEUS, and histopathological examination before and after treatment. Based on the post-treatment histopathological efficacy, patients were divided into the effective group ( n=67) and the ineffective group ( n=31). The CEUS and automatic volumetric ultrasound parameters before and after treatment, as well as the evaluation efficacy of these two types of parameters for NAC efficacy in breast cancer, were compared. The value of CEUS combined with automatic volumetric ultrasound in evaluating NAC efficacy for breast cancer was analyzed. Results:After NAC treatment, the CEUS parameters [time to peak (TTP) and arrival time (AT) of contrast agent] were longer than those before treatment, while the peak intensity (PI) was lower than that before treatment (all P<0.05); the automatic volumetric ultrasound parameters (tumor volume, area, thickness, length, and width) after NAC treatment were all smaller than those before treatment (all P<0.05). After treatment, the PI, volume, area, thickness, length, and width in the effective group were significantly smaller than those in the ineffective group, while the TTP and AT were significantly longer than those in the ineffective group (all P<0.05). Receiver operating characteristic (ROC) curve analysis showed that the area under the curve (AUC) of CEUS parameters and automatic volumetric ultrasound parameters for predicting effective NAC efficacy in breast cancer was 0.837(0.749-0.904) and 0.864(0.780-0.925), respectively, with no statistically significant difference between the two ( P=0.674). The AUC of the combined parameters for predicting effective NAC efficacy was 0.942(0.875-0.979), which was significantly higher than that of CEUS parameters or automatic volumetric ultrasound parameters alone ( Z=2.947, 2.135, P=0.003, 0.033). Conclusions:The combination of CEUS and automatic volumetric ultrasound parameters has high value in the efficacy evaluation of NAC for breast cancer and can be used as a clinical reference.

Objective:To explore the clinical application value of magnetic resonance imaging (MRI)-guided wire localization to the non-palpable breast lesions (NPBL) identified on MRI only.Methods:A retrospective case series study was conducted. A total of 171 patients with NPBL identified on MRI only who underwent MRI-guided wire localization from April 2017 to May 2024 in Shaanxi Provincial Cancer Hospital were collected. All patients had breast MRI Breast Imaging Report and Data System (BI-RADS) 4a and above lesions, and underwent MRI-guided wire localization within the same menstrual cycle within 2 days to 2 months after diagnostic MRI examination. Based on postoperative pathological results, the MRI characteristics of benign and malignant lesions were compared, and the clinical application value of MRI-guided wire localization was evaluated.Results:There were 179 lesions in 171 patients, including 54 malignant lesions (30.17%) and 125 benign lesions (69.83%). There was no statistically significant difference in the enhancement morphology between pathological benign and malignant NPBL lesions ( χ2 = 0.04, P = 0.982), while there were statistically significant differences in breast background parenchymal enhancement, lesion time-signal intensity curve and BI-RADS classification ( χ2 values were 32.03, 20.72 and 37.60, respectively, all P < 0.05). Conclusions:For NPBL that is identified on MRI only and evaluated as BI-RDADS 4a or above, MRI-guided wire localization can improve the accuracy of diagnosis and treatment of intraductal carcinoma, early invasive cancer and high-risk lesions.

Objective:To analyze the evaluation value of contrast-enhanced ultrasound (CEUS) combined with automatic volumetric ultrasound in the efficacy of neoadjuvant chemotherapy (NAC) for breast cancer.Methods:A retrospective study was conducted on 98 female patients with breast cancer admitted to Shaanxi Provincial Cancer Hospital from January to December 2022. All patients received 4 cycles of NAC, and underwent conventional ultrasound, automatic volumetric ultrasound, CEUS, and histopathological examination before and after treatment. Based on the post-treatment histopathological efficacy, patients were divided into the effective group ( n=67) and the ineffective group ( n=31). The CEUS and automatic volumetric ultrasound parameters before and after treatment, as well as the evaluation efficacy of these two types of parameters for NAC efficacy in breast cancer, were compared. The value of CEUS combined with automatic volumetric ultrasound in evaluating NAC efficacy for breast cancer was analyzed. Results:After NAC treatment, the CEUS parameters [time to peak (TTP) and arrival time (AT) of contrast agent] were longer than those before treatment, while the peak intensity (PI) was lower than that before treatment (all P<0.05); the automatic volumetric ultrasound parameters (tumor volume, area, thickness, length, and width) after NAC treatment were all smaller than those before treatment (all P<0.05). After treatment, the PI, volume, area, thickness, length, and width in the effective group were significantly smaller than those in the ineffective group, while the TTP and AT were significantly longer than those in the ineffective group (all P<0.05). Receiver operating characteristic (ROC) curve analysis showed that the area under the curve (AUC) of CEUS parameters and automatic volumetric ultrasound parameters for predicting effective NAC efficacy in breast cancer was 0.837(0.749-0.904) and 0.864(0.780-0.925), respectively, with no statistically significant difference between the two ( P=0.674). The AUC of the combined parameters for predicting effective NAC efficacy was 0.942(0.875-0.979), which was significantly higher than that of CEUS parameters or automatic volumetric ultrasound parameters alone ( Z=2.947, 2.135, P=0.003, 0.033). Conclusions:The combination of CEUS and automatic volumetric ultrasound parameters has high value in the efficacy evaluation of NAC for breast cancer and can be used as a clinical reference.

Objective:To explore the clinical application value of magnetic resonance imaging (MRI)-guided wire localization to the non-palpable breast lesions (NPBL) identified on MRI only.Methods:A retrospective case series study was conducted. A total of 171 patients with NPBL identified on MRI only who underwent MRI-guided wire localization from April 2017 to May 2024 in Shaanxi Provincial Cancer Hospital were collected. All patients had breast MRI Breast Imaging Report and Data System (BI-RADS) 4a and above lesions, and underwent MRI-guided wire localization within the same menstrual cycle within 2 days to 2 months after diagnostic MRI examination. Based on postoperative pathological results, the MRI characteristics of benign and malignant lesions were compared, and the clinical application value of MRI-guided wire localization was evaluated.Results:There were 179 lesions in 171 patients, including 54 malignant lesions (30.17%) and 125 benign lesions (69.83%). There was no statistically significant difference in the enhancement morphology between pathological benign and malignant NPBL lesions ( χ2 = 0.04, P = 0.982), while there were statistically significant differences in breast background parenchymal enhancement, lesion time-signal intensity curve and BI-RADS classification ( χ2 values were 32.03, 20.72 and 37.60, respectively, all P < 0.05). Conclusions:For NPBL that is identified on MRI only and evaluated as BI-RDADS 4a or above, MRI-guided wire localization can improve the accuracy of diagnosis and treatment of intraductal carcinoma, early invasive cancer and high-risk lesions.