Study Of Post-Breast Reconstruction Shape And Position Changes After Breast Cancer Surgery Based On Three-Dimensional Scanning Technology

Objective:This study aims to research the changes in breast volume and inframammary crease position in breast implant reconstructions for breast cancer patients using 3D scanning technology.Analysis the changes of breast volume and inframammary crease position post-implant reconstruction and the factors affecting it through breast 3D scanning.Analysis the impact of changes in breast volume and inframammary crease position on the patient’s score on the Breast-Q scale post-implant reconstruction.Methods:Study subjects:This study collected data from 117 patients who underwent implant reconstruction surgery for breast cancer at the breast disease diagnosis and treatment center of Qilu Hospital Affiliated to Shandong University from July 2020 to June2022.Inclusion criteria were patients with primary breast cancer confirmed by histopathology,undergoing simple breast implant reconstruction or breast implant reconstruction combined with latissimus dorsi myocutaneous flap transfer,without evidence of distant metastasis either clinically or radiographically,and who agreed to participate in the related research.Exclusion criteria were patients with severe breast ptosis,those who required concurrent contralateral breast reduction surgery,patients who underwent bilateral breast cancer surgery,patients who received breast region radiotherapy within 6 months after surgery,patients who underwent implant removal or replacement for various reasons within 6 months after surgery,and patients with missing or lost clinical data.Study methods:Part 1:Before the surgery,and one month and six months after the surgery,the breast volume of patients scheduled for implant reconstruction for breast cancer was measured by three-dimensional scanner,and the difference in breast volume was obtained.Statistical analysis was performed on the change in bilateral breast volume.Part 2:Before the surgery,and one month and six months after the surgery,the inframammary crease height of both breasts of patients scheduled for implant reconstruction for breast cancer was scanned and measured by three-dimensional scanner,and the difference in inframammary crease height was obtained.Statistical analysis was performed on the change in the difference in inframammary crease height of both breasts.Part 3:One month and six months after the surgery,the Breast-Q scoring system was used to evaluate patients who underwent implant reconstruction for breast cancer,and the evaluation results were statistically analyzed in comparison to the changes in breast volume and inframammary crease height after reconstruction.Results:All 117 patients were female.100 patients underwent simple breast implant reconstruction surgery,among which 60 underwent reconstruction surgery with nipple-areola complex preservation,and 40 underwent reconstruction surgery without preservation of the nipple-areola complex.17 patients underwent breast implant reconstruction surgery combined with latissimus dorsi myocutaneous flap transfer,all without preservation of the nipple-areola complex.The minimum age of the 117 patients who underwent breast cancer reconstruction surgery was 27 years old,the maximum was 65 years old,with an average age of 42.9±7.2 years.The minimum BMI of the 117 patients who underwent breast cancer reconstruction surgery was 18.75 kg/m~2,the maximum was 27.34 kg/m~2,with an average of 22.67±2.22 kg/m~2.Part 1:Three-dimensional scanning technology was applied to the affected breast of 117breast cancer reconstruction surgery patients one month and six months post-surgery to perform three-dimensional reconstruction and measure the volume.The median volume difference was found to have a statistically significant difference between one month and six months post-surgery.Statistical analysis showed that the change in volume of the affected breast within six months post-surgery had a correlation with the patient’s BMI and preoperative volume of the affected breast.The median volume difference of the affected breast among the three different surgical methods was found to be statistically significant within six months post-surgery.Part 2:Three-dimensional scanning technology was applied to measure and calculate the position of the inframammary crease under the breasts of 117 breast cancer reconstruction surgery patients one month and six months post-surgery.The median height difference of the inframammary crease under both breasts was found to have a statistically significant difference between one month and six months post-surgery.The change in height difference of the inframammary crease under both breasts among the three different surgical methods was found to be statistically significant within six months post-surgery.Part 3:The Breast-Q questionnaire was administered to 117 patients one month and six months post-surgery.Multivariate analysis showed that preoperative volume of the affected breast,change in volume of the affected breast within six months post-surgery,and change in height difference of the inframammary crease under both breasts within six months post-surgery were independent predictors of the reduction in score on the Breast-Q questionnaire Conclusion:1.Based on the three-dimensional scanning results,patients undergoing breast cancer reconstruction surgery showed a decreasing trend in the volume of the affected breast within 6 months postoperatively.This change was related to the patient’s BMI,preoperative volume of the affected breast,and the choice of breast cancer reconstruction technique.2.Based on the three-dimensional scanning results,patients undergoing breast cancer reconstruction surgery showed an increasing trend in the height difference of bilateral inframammary fold within 6 months postoperatively.This change was associated with the choice of breast cancer reconstruction technique.3.Within 6 months after breast cancer reconstruction surgery,patients exhibited a decreasing trend in satisfaction with their reconstructed breasts.Based on the three-dimensional scanning results,this change was related to the preoperative volume of the affected breast,changes in the volume of the affected breast within 6 months postoperatively,and changes in the height difference of bilateral inframammary fold.