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Background: Breast cancer (BC) is a major public health concern with over 2 million new cases diagnosed and over 600,000 deaths in 2018 in women worldwide. When distant metastases are present at diagnosis, the 5-year survival rate is only 26%. Recent studies have suggested that persistent organic pollutants (POPs) that accumulate in adipose tissue (AT) can influence tumor phenotype and stimulate cellular processes important for metastasis such as invasion. We, therefore, tested the hypothesis that POP exposure is associated with BC metastasis. Methods: We conducted an exploratory case-control study in which the concentrations of 49 POPs were measured in both AT and serum samples from BC patients, with or without lymph node metastasis, who underwent partial or total mastectomies, lymph node biopsies and sampling of the adipocytic tumor microenvironment. Adjusted, unconditional logistic models were used to study the associations between the POP concentrations and the risk of metastasis and other hallmarks of cancer aggressiveness. Results: 2.3.7.8-TCDD concentrations in AT are positively associated with the risk of metastasis in 43 patients who have BMIs equal or higher than 25 kg/m2 (odds ratio: 4.48 (1.32–20.71)). Furthermore, the concentrations of 2.3.7.8-TCDD and two coplanar PCBs (77&169) in AT also were positively associated with the risk of lymph node metastasis and the tumor size. Conclusion: Our study suggests that 2.3.7.8-TCDD and some PCBs contribute to the development of tumor metastasis and other hallmarks of cancer aggressiveness. While these results should be considered with caution, this is the first study to identify such potential risk factors. Larger longitudinal studies are necessary to confirm our results.Clinical Trial Protocol Record: 2013-A00663-42. Keywords: Breast cancer, Environmental exposure, Adipose tissue, Serum, Organochlorine pesticides, Endocrine disrupting chemicals, Polychlorinated biphenyls, Perfluoroalkyl acid, Dioxins

ObjectiveThe aim of our study was to report the technique, the feasibility, and perioperative results of robotic extraperitoneal paraaortic lymphadenectomy in gynecological cancers performed for isolated or combined procedures.MethodsThis is a retrospective study of 24 consecutive patients undergoing robotic extraperitoneal paraaortic lymphadenectomy using the Da Vinci Surgical system (Intuitive Inc, Sunnyvale, CA) (cervical cancer, n = 15; high-risk endometrial cancer, n = 8; and ovarian cancer, n = 2, including 1 synchronous tumor). Extraperitoneal paraaortic lymphadenectomy was performed using the surgical technique previously described by laparoscopy.ResultsOf the 24 included patients, 12 patients had isolated robotic extraperitoneal paraaortic lymphadenectomy, whereas the others underwent the following associated procedures: total hysterectomy with bilateral salpingo-oophorectomy, pelvic lymphadenectomy, and omentectomy (n = 7); pelvic transperitoneal lymphadenectomy (n = 3), laparotomic Bricker procedure (n = 1), and colpectomy (n = 1). The median age of patients was 55 (42–64) years, and body mass index was 24.1 kg/m2 (20.9–26.1). The operation was completed in all patients except three with associated procedures. Perioperative difficulties were encountered in 9 patients (gas leakage, n = 7; adhesions, n = 2; and dissection difficulties, n = 1). The number of removed paraaortic lymph nodes was 18 (14–25). The operating times were 180 (150–210) minutes for isolated extraperitoneal paraaortic lymphadenectomy and 240 (180–300) minutes in case of associated procedures. There were 2 intraoperative (pneumothorax and renal artery injury) and 5 postoperative (3 grades 1–2 and 2 grade 3) complications.ConclusionsIf robotic-assisted extraperitoneal paraaortic lymphadenectomy seems feasible in case of isolated procedure, further studies are required to prove its benefit compared with conventional laparoscopy.

Study Objective To compare the rates of intraoperative and postoperative complications of robotic surgery and laparoscopy in the surgical treatment of endometrial cancer. Design Unicentric retrospective study (Canadian Task Force classification II-2). Setting Tertiary teaching hospital. Patients The study was performed from January 2002 to December 2011 and included patients with endometrial cancer who underwent laparoscopic or robotically assisted laparoscopic surgical treatment. Data collected included preoperative data, tumor characteristics, intraoperative data (route of surgery, surgical procedures, and complications), and postoperative data (early and late complications according to the Clavien-Dindo classification, and length of hospital stay). Morbidity was compared between the 2 groups. Measurements and Main Results The study included 146 patients, of whom 106 underwent laparoscopy and 40 underwent robotically assisted surgery. The 2 groups were comparable in terms of demographic and preoperative data. Intraoperative complications occurred in 9.4% of patients who underwent laparoscopy and in none who underwent robotically assisted surgery (p = .06). There was no difference between the 2 groups in terms of postoperative events. Conclusion Robotically assisted surgery is not associated with a significant difference in intraoperative and postoperative complications, even when there were no intraoperative complications of robotically assisted surgery.

Since the advent of sentinel node biopsy, which made it possible to reduce the morbidity of axillary surgery, axillary lymph node dissection has been constituting the treatment of reference in certain cases of breast cancer. One of the most frequent complications in the immediate postoperative period is the lymphocele or seroma, the frequency of which is independent of the axillary technique of surgery. Following an analysis of the literature, some risk factors were isolated such as a high body mass index, the high volume of the first three days drainage and arterial hypertension. Some techniques seem to show a benefit in the reduction of the lymphocele: sentinel node biopsy, padding of the axilla and the axillary drainage. The majority of other techniques such as the use of fibrin sealant, hemolymphostatic sponges, various techniques of axillary dissection, external axillary compression, differed mobilization from the upper limb, axillary dissection by lipo-aspiration and endoscopic axillary dissection, have too contradictory results at the present time to be recommended in clinical practice. No consensus is clearly established to decrease the incidence and the volume of the seroma after axillary dissection in breast cancer. Today, two techniques can be nevertheless distinguished: sentinel node biopsy and padding of the axilla.

The purpose of the study was to compare the postoperative pain of patients who had a hysterectomy through vaginal route according to the process of binding: wire or electrosurgical bipolar vessel sealing.Retrospective study carried out in the 60 last patients who underwent a hysterectomy by vaginal route for a benign pathology in the gynaecological service of surgery of the CHI Poissy-Saint-Germain-en-Laye until March 2006. Among these patients, 32 had profited from a binding by wire and 28 of the electrosurgical bipolar vessel sealing. The studied criteria were the post-operative pain, total morphine consumption and the durations of the analgesic treatment, the hospitalisation and intervention time.The postoperative pain in the first 24 hours was twice lower using thermofusion; it was valid in immediate post-operative period and after 24 hours. In addition, total morphine consumption was also significantly lower using thermofusion.This pilot study shows that the electrosurgical bipolar vessel sealing allows a reduction in the pain into the immediate postoperative period. Other prospective and randomised studies would allow it and conclude on the duration of hospitalisation, the quality of life from the patients and the cost in terms of public health.