Lactation History Affects Postoperative Fat Volume Retention Rate in Autologous Fat Grafting Breast Augmentation.

BACKGROUND: Autologous fat grafting has been widely used in the field of plastic surgery, especially breast aesthetic augmentation. However, postoperative fat volume retention rate is still difficult to predict. OBJECTIVE: The authors conducted a retrospective study to compare the fat volume retention rate in patients with varying lactation histories. METHODS: A retrospective study was performed of patients who underwent autologous fat grafting breast augmentation in our center from 2012 to 2018. Individuals were separated into two groups according to their lactation history: Group A without a history of lactation and Group B with a history of lactation. RESULTS: A total of 70 cases (137 breasts) were included (Group A, n = 40; Group B, n = 30). Patients without lactation history were younger (Group A, 25.88 years; Group B, 36.03 years, p < 0.05) and had a significantly lower mean body mass index (Group A,19.72 kg/m2; Group B, 20.83 kg/m2, p = 0.010). The proportion of donor sites varied (Group A, abdomen 25%, thigh 70%; Group B, abdomen 53.33%, thigh 46.67%, p < 0.05). The percentage of tissue volume retained of patients with a history of lactation was significantly higher (Group A, 30.42%; Group B, 41.03%, p = 0.028). CONCLUSION: Significant differences in postoperative volume retention rate in different patients based on lactation history were observed. The volume retention rate after breast augmentation with autologous fat is higher in patients with a history of lactation. The physiological process of lactation may influence the response to autologous fat grafting, but further studies of the mechanism are needed. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

Application of 3D imaging technology in preoperative evaluation of breast conserving surgery / 中国肿瘤临床

Objective: To evaluate 3D imaging technology in the preoperative evaluation of breast conserving surgery. Methods: A ret-rospective analysis was conducted using clinical data from 38 patients who underwent breast conserving surgery that was assisted by 3D imaging technology in Xiaogan Hospital Affiliated to Wuhan University of Science and Technology from April 2017 to January 2019. All 38 patients underwent 3.0-T breast magnetic resonance imaging (MRI) examination before surgery, and 3D reconstruction of virtu-al images was constructed through 3D modeling of medical digital imaging and communication (DICOM) data. The predicted resected tissue volume was compared with the volume of the actual resected specimen, and the surgical margin and postoperative aesthetics of the breast conserving surgery were evaluated. Results: The reconstructed 3D model clearly displayed the anatomical structures of the breast, tumor, gland, and blood vessels, and their relationship in 3D spaces. The goodness of fit of the 3D model to the practical sit-uation was 97.4% (37/38). In terms of the resection tissue volume, there was no significant difference between the predicted results (PRTV) and actual results (ARTV) [(61.7 ± 20.1) mL vs. (65.1 ± 20.7) mL, P>0.05]. There was a strong positive correlation between ARTV and PRTV (P<0.01). One patient underwent supplementary secondary surgery, resulting in an incidence of 2.6% (1/38). The postopera-tive satisfaction for breast conserving surgery was 100% (38/38). Conclusions: 3D imaging technology clearly displays the anatomical relationship between breast tumor and surrounding tissues, and correctly assesses breast volume, guiding surgical resection.