Endoscopic breast surgery has become more and more popular, and prepectoral prosthetic breast reconstruction is also becoming more and more widely used. The combination of endoscopic surgery and prepectoral prosthetic breast reconstruction has produced a good complementary effect and promoted their respective development. This paper describes the characteristics of endoscopic breast surgery and prepectoral prosthetic breast reconstruction, analyzing the current status of the combination of these two technologies, and looks forward to the application of endoscopic prepectoral prosthetic breast reconstruction

Radiofrequency ablation (RFA) has emerged as a treatment modality for solid tumors. However, the feasibility of RFA in treating the tumor bed in breast surgery remains investigational. Herein, we have reported the preliminary results evaluating the effect of RFA in breast-conserving surgery (BCS), followed by neo-adjuvant chemotherapy (NAC), and the antibacterial effect of nanomaterials. From April 1, 2015 to March 31, 2017, 22 patients received NAC followed by BCS. After the lumpectomy was complete, suspicious tumor margins were ablated with radiofrequency electrodes. The clinicopathological features and follow-up results of these patients were collected. Furthermore, the Ag nanogel was prepared for the evaluation of antibacterial activity. RFA was successful in all 22 patients during BCS. Two patients (4.5%) got skin burns and six patients (27.3%) had solid nodules formed in situ . The median follow-up time was 22.5 months (range, 11–34 months). No patients presented local recurrences or metastasis. Moreover, 18 patients (81.8%) were satisfied with the cosmetic outcomes. The Ag nanogel has stable morphology and good bacteriostatic effect in Escherichia coli and Bovis aureus . The RFA techniques applied in BCS after NAC have high success rates with relatively low complication rates. RFA may improve cosmetic results after BCS and enhance local tumor control. Further applications of RFA in patients treated with BCS after NAC must be assessed in long-term studies. Nanomaterials have good antibacterial effect and can be used on the surface of medical instruments.

BackgroundIn order to explore the surgical safety and the reliability of axillary staging of single-port endoscopic-sentinel lymph node biopsy, we combined it with indocyanine green that was excited by near-infrared fluorescence endoscopy and carbon nanoparticles as a tracer and compared this method to conventional open sentinel lymph node biopsy.MethodsThis is a retrospective and observational study, there were 20 patients in each group and the total sample size was 60: Group 1, single-port endoscopic-sentinel lymph node biopsy combined with indocyanine green and carbon nanoparticles; Group 2, single-port endoscopic-sentinel lymph node biopsy with carbon nanoparticles only; Group 3, conventional sentinel lymph node biopsy with indocyanine green and carbon nanoparticles. Sentinel lymph node detection and upper extremity function were determined to measure the safety and efficacy of the novel single-port endoscopic-sentinel lymph node biopsy (SPE-SLNB) technique to the standard conventional sentinel lymph node biopsy technique.ResultsThe detection rate of sentinel lymph nodes was 100% in Group 1, 100% in Group 2, and 95% in Group 3. There were no significant differences in upper arm function and pain scores between the three groups.ConclusionThe novel technique of combining indocyanine green and carbon nanoparticles with single-port endoscopic-sentinel lymph node biopsy achieved a similar detection rate and mean number of sentinel lymph nodes as conventional sentinel lymph node biopsy. Traditional open surgery requires two different incisions for breast surgery and SLNB. While the most important advantage of SPE-SLNB is that two procedures can be effectively performed through a single-port in the axilla Therefore, for patients who meet the indications, single-port endoscopic-sentinel lymph node biopsy is as safe and reliable as conventional sentinel lymph node biopsy but has the aesthetic advantage of only one incision.

Background:Breast cancer is the most common malignancy in female patients. In recent years, more and more studies have focused on how to improve the appearance and the quality of life for patients. This study aimed to compare the oncologic safety, aesthetic results, and upper extremity function between single-port insufflation endoscopic nipple-sparing mastectomy (SIE-NSM) and conventional open mastectomy (C-OM) in early-stage breast cancer treatment.Methods:In our retrospective cohort, 285 patients with stage I and II breast cancer were categorized into the SIE-NSM group (n=71) and the C-OM group (n=214). We assessed local recurrence, distant metastasis, and upper extremity function across the two groups. The BREAST-Q scale was employed to analyze differences in aesthetic results, psychosocial well-being, and sexual health. The risk of local recurrence was evaluated using multivariable binary logistic regression, while a multivariable linear regression model gauged upper extremity function and aesthetic outcomes.Results:Local recurrence rates between the two groups were statistically similar (1/71, 1.4% for SIE-NSM vs. 2/214, 0.9% for C-OM, P=0.735), as confirmed by the multivariable binary logistic regression analysis. Neither group exhibited distant metastases. The SIE-NSM group demonstrated higher scores in satisfaction with breasts, chest wellness, psychosocial health, and sexual well-being (P<0.001). The SIE-NSM group also exhibited superior outcomes regarding chest wall/breast pain, shoulder mobility, and daily arm usage (P<0.001). No subcutaneous effusion was reported in the SIE-NSM group, whereas the C-OM group had a 10.7% incidence rate (P=0.004).Conclusions:SIE-NSM offers comparable oncologic safety to C-OM but provides enhanced satisfaction regarding breast appearance, physical comfort, psychosocial health, sexual health, and improved upper extremity functionality. Consequently, this innovative approach is a suitable surgical alternative for treating early-stage breast cancer.

Introduction This study compares the perioperative results, aesthetic outcome and oncologic safety of single-port insufflation endoscopic nipple-sparing subcutaneous mastectomy combined with immediate reconstruction using prosthesis implantation (SIE-NSM-IRPI) with those of conventional open-nipple and areola-sparing subcutaneous mastectomy combined with immediate reconstruction using prosthesis implantation (C-NSM-IRPI). Methods In this retrospective cohort study, 64 early-stage breast cancer patients were divided into SIE-NSM-IRPI (n = 38) and C-NSM-IRPI (n = 26) groups. Perioperative results (operation time, intraoperative blood loss, incision length, drainage duration, and recent complications) were then compared between the two groups. Differences in satisfaction with the breasts, psychosocial well-being, physical well-being (chest) and sexual well-being were analyzed according to the BREAST-Q scale, and survival outcomes were also compared. Results The median follow-up time was 51.5 months. The incision length of SIE-NSM-IRPI was shorter than that of C-NSM-IRPI ( P < 0.001). SIE-NSM-IRPI achieved the same detection rate and median number of sentinel lymph nodes as C-NSM-IRPI (3.00vs. 4.00, P = 0.780). The incidence of prosthesis removal due to infection or prosthesis exposure in the SIE-NSM-IRPI group was lower than that in the C-NSM-IRPI group ( P = 0.015). Satisfaction with breasts (82.00vs.59.00, P < 0.001), psychosocial well-being (93.00vs.77.00, P = 0.001) and physical well-being (chest) (89.00vs.82.00, P < 0.001) scores were higher in the SIE-NSM-IRPI group. There were no significant differences between the two groups in disease-free survival (hazard ratio = 0.829, 95% confidence interval = 0.182–3.779) and overall survival (hazard ratio = 1.919, 95% confidence interval = 0.169–21.842). Conclusion In this selected cohort of patients with early breast cancer, SIE-NSM-IRPI was comparable to C-NSM-IRPI, considering oncologic safety and detection of sentinel lymph nodes. It had a lower incidence of prosthesis removal, shorter incision length, and was associated with better patient satisfaction with the breasts. More random clinical trials of this novel approach in a larger cohort of Chinese patients with an extended follow-up period are needed in the future.

Objective:To explore the preventive value of "integrated prevention strategy" for nipple and areola ischemia after single-port endoscopic subcutaneous mastectomy.Methods:The clinical data of 72 patients with breast cancer who received single-port endoscopic subcutaneous mastectomy in Beijing Friendship Hospital, Capital Medical University from July 2019 to July 2021 were retrospectively analyzed, they were all female. The follow-up period was up to July 2022. According to the perioperative treatment methods, the patients were divided into observation group ( n=40) and control group ( n=32). The patients in the observation group who adopted the "integrated prevention strategy" scheme, and patients in the control group who adopted the conventional treatment scheme. The incidence of postoperative nipple and areola ischemic was compared between the two groups, and the postoperative cosmetic effect, quality of life and satisfaction of patients were evaluated. Measurement data were expressed as mean ± standard deviation ( ± s), and t-test was used for comparison between groups; the Chi-square test was used to compare the data groups. Results:The postoperative drainage volume in the observation group was significantly lower than that in the control group [(632.40±226.37) mL vs (774.91±239.85) mL], and the difference was statistically significant ( P=0.013). Two weeks after operation, there was 1 case of nipple and areola ischemia in the observation group, and 7 cases in the control group, the difference was statistically significant between the two groups ( P=0.019). Twelve months after operation, the score of breast satisfaction (83.93±11.64 vs 67.28±11.52), chest satisfaction (89.63±8.06 vs 83.03±9.49) and psychosocial well-being (89.43±12.42 vs 78.88±10.40) in the observation group were better than those in the control group, the differences were statistically significant ( P<0.05). Conclusion:"Integrated prevention strategy" can effectively prevent the occurrence of nipple and areola ischemic after single-port endoscopic subcutaneous mastectomy and improve patient satisfaction, which has certain promotion value.

Background In the surgical treatment of breast cancer, the goal of surgeons is to continually create and improve minimally invasive surgical techniques to increase patients’ quality of life. Currently, routine breast-conserving surgery is often performed using two obvious incisions. Here, we compare the clinical efficacy and aesthetic outcomes of a novel technique using one incision, called ‘single-port insufflation endoscopic breast-conserving surgery’ (SIE-BCS), vs. conventional breast-conserving surgery (C-BCS) in patients with early-stage breast cancer. Methods A total of 180 patients with stage I or stage II breast cancer participated in this study, of whom 63 underwent SIE-BCS and 117 underwent C-BCS. Logistic regression analysis was conducted to assess the risk of local recurrence and metastasis. Aesthetic outcomes were evaluated using the BREAST-Q scale. Results The mean operation time was significantly longer for SIE-BCS (194.9 ± 71.5 min) than for C-BCS (140.3 ± 56.9 min), but the mean incision length was significantly shorter for SIE-BCS than for C-BCS (3.4 ± 1.2 cm vs. 8.6 ± 2.3 cm). While both surgeries yielded similar BREAST-Q ratings for satisfaction with breasts and sexual well-being, SIE-BCS was associated with significantly better ratings for physical well-being (chest area) and psychological well-being. Additionally, SIE-BCS was associated with decreased rates of adverse effects of radiation. The preliminary analysis showed that SIE-BCS did not increase the risk of local recurrence or metastasis. Conclusion The novel single-port insufflation endoscopic assisted BCS technique is feasible, safe, and improves patients’ postoperative comfort and psychological well-being, as compared to the conventional technique.

DLG1-AS1 and PBX3 have been identified as acting as an oncogene in cervical cancer. However, they have not been well explored in triple-negative breast cancer (TNBC). As TNBC is one of the malignancies causing increasing death throughout the world, this study aimed to probe into the regulatory relationship between DLG1-AS1 and PBX3 in TNBC cells. In this study, real-time quantitative PCR (qRT-PCR) and western blot experiments were conducted to investigate the RNA and protein levels of genes of interest in TNBC cells. Functional experiments were implemented, such as 5-ethynyl-2'-deoxyuridine (EdU), transwell, and wound healing assays, to assess the changes in TNBC cell phenotype. Chromatin immunoprecipitation, luciferase reporter, RNA binding protein immunoprecipitation, and RNA pull-down assays were conducted to investigate the binding relationships among subject genes. The results show that DLG1-AS1 and PBX3 displayed high expression in TNBC cells, and PBX3 worked as the transcriptional activator of DLG1-AS1. Also, DLG1-AS1 served as an oncogene in TNBC cells and as a sponge for miR-16-5p to up-regulate JARID2. Meanwhile, JARID2 and PBX3 exerted oncogenic effects on TNBC cell growth. In conclusion, PBX3-activated DLG1-AS1 can promote the proliferation, invasion, and migration of TNBC cells by sponging miR-16-5p and elevating JARID2 expression.

Objective:To explore the significance of exposing the circummammary ligament under endoscopy and the effect of membrane anatomy in breast reconstruction.Methods:The case data of 49 breast cancer patients who underwent endoscopic nipple-sparing mastectomy combined with one-stage breast reconstruction with prosthesis implantation in Beijing Friendship Hospital, Capital Medical University from February 2014 to December 2021 were retrospectively analyzed, there were 44 cases of posterior pectoralis prosthesis implantation, 5 cases of anterior pectoralis prosthesis implantation. The anatomical structure of the circummammary ligament was observed under endoscopy during operation, and the annular mammary ligament was used as an anatomical marker to complete subcutaneous glandectomy and prosthesis implantation for breast reconstruction, the BREAST-Q scales were used to evaluate the postoperative effect.Results:The medial sternal ligament, sub clavicular ligament, lateral confluence ligament and triangular ligament condensation could be clearly exposed in all 49 cases. Breast reconstruction module of BREAST-Q were used to evaluate the surgery effect after breast cancer surgery, the scores of postoperative breast satisfaction, chest wall status, psychosocial status and sexual health status were 81.43±12.57, 88.39±10.61, 88.04±13.70, 74.82±15.93.Conclusion:The endoscopic technique is beneficial to expose the circummammary ligament during operation, and surgical resection and reconstruction can better restore the appearance of the breast and improve postoperative satisfaction according to the principle of membrane anatomy.

目的 分析单孔腔镜乳房重建术中吲哚菁绿（indocyanine green,ICG）荧光显影对评估乳头乳晕复合体（nipple-areola complex,NAC）血运和植入物选择的价值。方法 回顾性收集2018年11月至2020年3月期间首都医科大学附属北京友谊医院收治的19例行单孔充气法腔镜乳腺癌根治术联合乳房重建治疗的患者，该组患者应用ICG荧光显影技术，评估NAC的供血模式和缺血坏死风险，从而指导植入物选择；同时选择2017年2月至2018年10月期间于该医院行单孔充气法腔镜乳腺癌根治术联合乳房重建的14例患者作为历史对照（对照组）。比较2组患者的NAC缺血坏死、乳房满意度和植入物取出情况。结果 ICG组患者中，V1模式3例，2例出现乳头NAC缺血坏死（1级1例，2级1例）；V2模式和V3模式16例，均未出现NAC缺血坏死；所有患者未出现植入物丢失。对照组5例出现NAC缺血坏死（均属于严重缺血坏死），2例出现植入物丢失。ICG组的NAC严重缺血坏死率低于对照组（P＜0.01），但2组的植入物丢失率比较差异无统计学意义（P=0.17）。ICG组的乳房满意度评分高于对照组（P＜0.01），但2组患者的胸壁状态满意度、社会心理状态满意度和性生活满意度评分比较差异均无统计学意义（P＞0.05）。结论 ICG荧光显影可应用于假体重建手术中评估NAC的供血模式，从而指导即刻乳房重建术中植入物的选择，降低严重缺血坏死风险，以便进一步改善术后乳房满意度。

BackgroundWe sought to explore the impact of changing treatment strategy based on circulating tumor cells (CTC) on postoperative survival of breast cancer.MethodsWe retrospectively analyzed records of patients who underwent surgery for early-stage breast cancer at Beijing Friendship Hospital from January 2016 to January 2018 and regularly underwent CTC examination after surgery. During the regular examination and CTC monitoring, the patients with positive CTC results and without distant metastasis had their treatment regimen changed.ResultsOf 109 patients who received CTC examination regularly after surgery, 61 (56.0%) were CTC-positive during postoperative follow-up, including 33 ER or PR-positive, and 28 ER and PR-negative patients. Of the 33 ER or PR-positive patients, 20 changed endocrine therapy drugs. Compared with those without replacement, those with changed endocrine therapy strategy had higher CTC clearance rates (90.0% vs. 53.8%, p=0.04) and significantly lower CTC-positive values (1.70 ± 1.72 vs. 0.62 ± 0.65, p = 0.04). Among the 28 patients who were CTC positive and ER and PR-negative, 11 used capecitabine. Compared with non-users, the capecitabine users had higher CTC clearance rates (100.0% vs. 52.9%, p=0.01) and more significant decrease in CTC-positive values (2.09 ± 1.14 vs. 0.82 ± 1.67, p=0.04). Disease-free survival (DFS) at 1, 3, and 5 years was significantly longer in those who changed treatment than in those who did not (respectively, 96.6% vs. 89.6%, 92.8% vs. 56.9%, 69.0% vs. 47.8%, p<0.01). By changing the treatment strategy, CTC-positive patients achieved DFS that was not significantly different from CTC-negative patients (95.0% vs. 97.7%, 77.5% vs. 82.9%, 57.6% vs. 59.9%, p=0.20).ConclusionTimely change of treatment strategy for breast cancer patients with positive CTC results after surgery may improve CTC clearance rate and DFS.

Objective:To investigate the surgical method and clinical application value of single-port inflatable endoscopic prepectoralis prosthesis implantation for breast reconstruction (external prosthesis wrapping Off-Label).Methods:From September 2021 to February 2022, 7 breast cancer patients who underwent single-port inflatable endoscopic prepectoralis prosthesis implantation breast reconstruction (Off-Label) in Beijing Friendship Hospital, Capital Medical University were retrospectively analyzed. Statistical analysis of surgical complications, postoperative movement deformities, postoperative chest wall pain, postoperative quality of life and satisfaction scores of patients were conducted.Results:All 7 patients successfully completed the operation. There were no complications such as postoperative bleeding, infection, ischemic necrosis of nipple-areola complex or skin flap, postoperative movement deformity, postoperative chest wall pain, capsular contracture, prosthesis exposure or removal. The BREAST-Q scale was used to evaluate the quality of life and satisfaction after breast reconstruction. Postoperative breast satisfaction (55-100 points), chest wall status (52-89 points), and social psychological status (62-100 points) can be compared High rating.Conclusion:The single-port inflatable endoscopic prepectoral prosthesis implantation breast reconstruction (Off-Label) can achieve better radical effect and cosmetic effect through a shorter operation time, and the postoperative quality of life and satisfaction of patients are higher.

Objective:To discuss the oncologic safety, aesthetic outcome, and upper extremity function of single-port insufflation endoscopic nipple-sparing mastectomy (SIE-NSM) in the treatment of early breast cancer.Methods:From January 2014 to August 2019, a total of 80 patients with stage Ⅰ and Ⅱ breast cancer underwent SIE-NSM, at Beijing Friendship Hospital, Capital Medical University were retrospectively analyzed and followed up. Estimated the oncologic safety, aesthetic outcome, and upper extremity function.Results:SIE-NSM was performed successfully on all 80 patients.There was no serious complication after surgery.The follow-up time was 16-82 months and the median follow-up time was 42 months. Local recurrence occurred in two patients, and there was no distant metastases. Four (5%) patients developed grade 1-3 nipple-areola complex ischemia. There were no cases of subcutaneous effusion.The satisfaction with breasts, chest well-being, psychosocial well-being, and sexual well-being scores were confirmed to be highly rated by Breast-Q scale. Upper extremity function score confirmed that good upper limb function was preserved after surgery. The mean length of incision was (3.6±0.8) cm, and the blood loss was (24.7±19.3) mL.Conclusions:SIE-NSM can achieve a higher cosmetic score and a better recovery of upper limb function on the premise of ensuring the safety of the tumor.This novel method is an appropriate surgical option for patients with early breast cancer.

目的 探讨两步法单孔腔镜乳房重建手术在早期乳腺癌治疗中的临床应用价值.方法 21例早期乳腺癌患者于乳房皮下腺体切除术即刻行两步法单孔腔镜乳房重建手术;记录手术情况、术后并发症及美容效果;术后6个月,应用BREAST Q乳腺癌患者结局量表评价患者对外观满意度和生活质量.结果 21例均顺利完成两步法单孔腔镜乳房重建手术,无中转开放手术病例;术后无假体取出、包膜挛缩发生,2例发生乳头、乳晕缺血坏死,发生率为9.5％.术后6个月,BREAST Q量表评分乳房满意度为(75.3±2.2)分,胸壁状态评分为(90.4±1.5)分,社会心理状态评分为(86.1±2.0)分,性健康程度评分为(71.4±2.6)分.结论 两步法单孔腔镜乳房重建手术在早期乳腺癌治疗中应用效果良好,患者可获较好的外观满意度和生活质量.

Minimally invasive surgical techniques, represented by endoscopic surgery, are one of the major advances in surgery during the 20th century. Based on the experience in other disciplines, breast surgeons have overcome the difficulties and developmental bottlenecks of endoscopic surgery in non-cavity organs, and operative techniques are maturing. The Chinese Society of Breast Surgery (CSBrS) identified the key issues in the clinical practice guidelines for endoscopic breast surgery in China through literature review and expert discussion, evaluated the quality of clinical research evidence according to the grading of recommendations assessment, development, and evaluation (GRADE) system, and developed the CSBrS practice guidelines (2021 edition) with the aim of accessibility in the clinical practice of breast surgery in China.

目的:探讨吲哚菁绿(ICG)分子荧光影像技术在单孔法腔镜前哨淋巴结活检术中的应用价值.方法:选取2019年3月至2019年12月收治的行腔镜前哨淋巴结活检术的20例早期乳腺癌患者,均以ICG联合纳米碳混悬注射液作为示踪剂.手术切除的前哨淋巴结送术中冰冻病理检查及常规石蜡病理检查.比较前哨淋巴结检出率、前哨淋巴结转移数量及ICG单独显影、纳米碳单独显影、ICG+纳米碳同时显影的前哨淋巴结数量.结果:ICG、纳米碳、ICG+纳米碳前哨淋巴结检出率分别为100.0％、95.0％、100％;前哨淋巴结检出数量分别为89枚、77枚、97枚,前哨淋巴结检出数量平均为(4.45±1.86)枚、(3.85±1.98)枚、(4.85±2.22)枚,ICG组与纳米碳组差异有统计学意义(P<0.05),ICG+纳米碳组与纳米碳组之间差异亦有统计学意义(P<0.001).20例患者中3例检出前哨淋巴结转移,转移前哨淋巴结7枚;7枚转移前哨淋巴结均被ICG检出,纳米碳仅检出其中2例患者共5枚转移前哨淋巴结.结论:ICG与单孔法腔镜前哨淋巴结活检术结合应用,具有较高的前哨淋巴结检出率及淋巴结检出数量,且前哨淋巴结假阴性率可能较低.

目的 探讨对伴有乳房下垂的乳腺癌病人使用改良延长内上蒂缩乳上提手术.方法 回顾性分析2018年4 月至2018年10 月首都医科大学附属北京友谊医院乳腺甲状腺外科收治的3例外上象限或外侧肿瘤直径较大且伴乳房下垂的乳腺癌病人行改良延长内上蒂缩乳上提手术的相关并发症和术后BREAST-Q评分.结果 3例病人病人术后均未出现脂肪液化、乳头乳晕复合体缺血坏死并发症.术后6个月BREAST-Q评分平均值与术前对比,生理状况评分为96.7分vs.66.7分,对乳房满意度评分为100.0分vs 64.7分,社会心理状态评分为100.0分vs.84.3分,性心理健康状态评分为97.7分vs.88.0分,术后乳头满意度均为满分20分.随访时间分别为13.7个月、16.6个月、19.3个月,均未见复发事件.结论 改良延长内上蒂乳房缩小术适用于外上、外侧象限病灶直径较大的病人,可以相对简便地修复术后局部缺损,同时改善乳房下垂,提高病人对乳房外观的满意度.

Abstract Purpose Indocyanine green (ICG) is an efficient tracer method used in sentinel lymph node biopsy (SLNB). The application of single-port endoscopic-assisted technology in the field of breast cancer is widely accepted. In order to explore the surgical safety of single-port endoscopic-SLNB (SPE-SLNB) and the reliability of axillary staging, we combined it with ICG that was excited by near-infrared fluorescence endoscopy and carbon nanoparticles (CN) as a tracer and compared this method to conventional open SLNB (C-SLNB). Methods Sixty patients with early breast cancer were recruited and divided into three groups. Twenty patients who underwent SPE-SLNB combined with ICG and CNs were placed in group A. Twenty patients who underwent SPE-SLNB with CNs only were placed in group B. Twenty patients who underwent C-SLNB with ICG and CNs were placed in group C. Results The detection rate of SLNs was 100% in group A, 100% in group B, and 95% in group C. In total, 97 SLNs were detected in group A, 65 SLNs were detected in group B, and 98 SLNs were detected in group C . Conclusion The novel technique of combining ICG and CNs with SPE-SLNB and the utilization of the endoscopic fluorescence imaging system achieved the same detection rate and mean number of SLNs as C-SLNB. Therefore, for patients who meet the indications, SPE-SLNB is as safe and reliable as C-SLNB.

To standardize the clinical application of implantable intravenous (IV) ports, the Chinese Society of Breast Surgery (CSBrS) of the Chinese Medical Association has identified the key clinical issues through literature research and expert discussion and evaluated the relevant evidence with reference to the grading of recommendations assessment, development, and evaluation. The CSBrS formulated the clinical practice guidelines to provide a reference for physicians specializing in breast cancer and other fields.

Objective: To examine the clinical application value of single-port inflatable endoscopic nipple sparing mastectomy with immediate reconstruction using prosthesis implantation in the treatment of early breast cancer. Methods: From February 2014 to July 2019, the clinic-pathological data of 34 early breast cancer patients received single-port inflatable endoscopic nipple sparing mastectomy with immediate reconstruction using prosthesis implantation at Department of General Surgery, Beijing Friendship Hospital, Capital Medical University were retrospectively analyzed and followed up. All the patients were female, with an age of 46(11) years (M(QR)) (range: 26 to 64 years). The radical cure degree of operation, cosmetic effect after operation were evaluated. The satisfaction to operation and personal quality of life after operation was accessed by BREAST-Q scale. Results: All surgical procedures were successfully completed. The operation time was (313.4±11.7) minutes (range: 200 to 485 minutes). The blooding-liquid was (33.8±3.3) ml (range: 10 to 100 ml). There were 5 cases (14.7%) of nipple areola necrosis after operation, of which 1 patient received taking the prosthesis out because of prosthesis exposure. There was no capsular contracture or postoperative bleeding case. The follow-up time was 35(17) months (range: 12 to 77 months), and there was one case suffering local recurrence and metastasis, and another suffering metastasis. The scores of postoperative breast satisfaction, psychosocial status, chest wall status and sexual health were 78.32±2.57 (range: 55 to 100), 89.12±2.30 (range: 82 to 100), 91.47±1.33 (range: 43 to 100), and 78.50±2.68 (range: 39 to 100). Conclusion: Single-port inflatable endoscopic nipple sparing mastectomy with immediate reconstruction using prosthesis implantation in the treatment of early breast cancer can achieve provided curative and cosmetic effect on patients with breast cancer, with good patients' postoperative quality of life and satisfaction.