Survival associated with the use of one-step nucleic acid amplification (OSNA) to detect sentinel lymph node metastasis in cervical cancer

INTRODUCTION

Sentinel lymph node (SLN) biopsy is part of surgical treatment of apparent early-stage cervical cancer. SLN is routinely analyzed by ultrastaging and immunohistochemistry. The aim of this study was to assess the survival of patients undergoing SLN analyzed by one-step nucleic acid amplification (OSNA) compared with ultrastaging.

METHODS

Single-center, retrospective, cohort study. Patients undergoing primary surgery and SLN mapping ( ±pelvic lymphadenectomy) for apparent early-stage cervical cancer between May 2017 and January 2021 were included. SLN was analyzed exclusively with OSNA or with ultrastaging. Patients with bilateral SLN mapping failure, with SLN analyzed alternatively/serially with OSNA and ultrastaging, and undergoing neo-adjuvant therapy were excluded. Baseline clinic-pathological differences between the two groups were balanced with propensity-match analysis.

RESULTS

One-hundred and fifty-seven patients were included, 50 (31.8%) in the OSNA group and 107 (68.2%) in the ultrastaging group. Median follow up time was 41 months (95%CI:37.9-42.2). 5-year DFS in patients undergoing OSNA versus ultrastaging was 87.0% versus 91.0% (p = 0.809) and 5-year overall survival was 97.9% versus 98.6% (p = 0.631), respectively. No difference in the incidence of lymph node recurrence between the two groups was noted (OSNA 20.0% versus ultrastaging 18.2%, p = 0.931). In the group of negative SLN, no 5-year DFS difference was noted between the two groups (p = 0.692). No 5-year DFS and OS difference was noted after propensity-match analysis (87.6% versus 87.0%, p = 0.726 and 97.4% versus 97.9%, p = 0.998, respectively).

CONCLUSION

The use of OSNA as method to exclusively process SLN in cervical cancer was not associated with worse DFS compared to ultrastaging. Incidence of lymph node recurrence in the two groups was not different.

Effect of a pre-emptive 2-hour session of high-flow nasal oxygen on postoperative oxygenation after major gynaecologic surgery: a randomised clinical trial

BACKGROUND

We aimed at determining whether a 2-h session of high-flow nasal oxygen (HFNO) immediately after extubation improves oxygen exchange after major gynaecological surgery in the Trendelenburg position in adult female patients.

METHODS

In this single-centre, open-label, randomised trial, patients who underwent major gynaecological surgery were randomised to HFNO or conventional oxygen treatment with a Venturi mask. The primary outcome was the Pao2/FiO2 ratio after 2 h of treatment. Secondary outcomes included lung ultrasound score, diaphragm thickening fraction, dyspnoea, ventilatory frequency, Paco2, the percentage of patients with impaired gas exchange (Pao2/FiO2 ≤40 kPa) after 2 h of treatment, and postoperative pulmonary complications at 30 days.

RESULTS

A total of 83 patients were included (42 in the HFNO group and 41 in the conventional treatment group). After 2 h of treatment, median (inter-quartile range) Pao2/FiO2 was 52.9 (47.9-65.2) kPa in the HFNO group and 45.7 (36.4 -55.9) kPa in the conventional treatment group (mean difference 8.7 kPa [95% CI: 3.4 to 13.9], P=0.003). The lung ultrasound score was lower in the HFNO group than in the conventional treatment group (9 [6-10] vs 12 [10-14], P<0.001), mostly because of the difference of the score in dorsal areas (7 [6-8] vs 10 [9-10], P<0.001). The percentage of patients with impaired gas exchange was lower in the HFNO group than in the conventional treatment group (5% vs 37%, P<0.001). All other secondary outcomes were not different between groups.

CONCLUSIONS

In patients who underwent major gynaecological surgery, a pre-emptive 2-h session of HFNO after extubation improved postoperative oxygen exchange and reduced atelectasis compared with a conventional oxygen treatment strategy.

CLINICAL TRIAL REGISTRATION

NCT04566419.

Human papillomavirus independent status on pathologic response and outcomes in locally advanced cervical cancer managed with chemoradiotherapy followed by surgery

OBJECTIVE

While human papillomavirus (HPV) has been shown to play a significant role in cervical cancer carcinogenesis (HPV associated cases), a considerable percentage of cervical cancers occur independently of HPV status (HPV independent).

METHODS

In this retrospective study of 254 locally advanced cervical cancer patients treated with chemoradiotherapy and radical surgery, HPV genotypes were determined using the Anyplex II HPV28 kit that uses multiplex, real time polymerase chain reaction technology. The primary endpoints of this study were to evaluate the complete response to chemoradiotherapy (pathologic complete response), the presence of microscopic (<3 mm, pathologic micro partial response, group 1) and macroscopic (>3 mm, pathologic macro partial response, group 2) residual carcinoma in the cervix, and the persistence of metastatic lymph nodes (group 3) in HPV independent cervical cancers. Secondary endpoints were evaluation of disease-free survival and overall survival.

RESULTS

Of 254 patients studied, 21 cases (8.3%) of cervical cancer were determined to be HPV independent. The percentage of pathologic complete response was found to be higher in the HPV associated group compared with the HPV independent group (p<0.001). In the HPV associated cervical cancer group, 5 year disease free survival was found to be 80.8% versus 59.9% in the HPV independent group (p=0.014). Overall survival was also higher in the HPV associated group (87.9%) compared with the HPV independent patients (69.4%) (p=0.023). In the multivariate analysis, the International Federation of Gynecology and Obstetrics (FIGO) stage and HPV genotypes maintained their relevant impact on pathologic complete response to chemoradiotherapy: FIGO stages IIIC1 and IIIC2 were associated with a 13-fold increased risk for the presence of metastatic lymph nodes compared with group 1 (p<0.001). HPV independent cervical cancers showed the highest risk for the development of macroscopic/stable disease (p=0.007), and persistence of metastatic lymph nodes (p=0.004) versus group 1, respectively.

CONCLUSIONS

This study showed that HPV status at diagnosis could be a relevant factor for clinical outcomes in locally advanced cervical cancer patients.

Needleoscopic-assisted risk-reducing bilateral salpingo-oophorectomy in BRCA1/2 mutation carriers: Peri-operative outcomes and psychological impact

OBJECTIVE

To investigate the role of needleoscopic-assisted laparoscopy in terms of surgical impact and psychological outcomes in RR-BSO for BRCA1/2 patients.

STUDY DESIGN

Prospective monocentric trial conducted at the Division of Gynecologic Oncology, "Fondazione Policlinico Universitario A. Gemelli" IRCSS in Rome. Between March 2016 and March 2018, 26 consecutive patients were prospectively enrolled in the study and underwent RR-BSO. Peri-operative surgical variables were collected. The psychological interview was performed at the discharge and during the first post-operative follow-up visit (between 30 and 60 days after surgery).

RESULTS

We reported a median OT of 18.5 min (range, 15-37), a median EBL of 0 mL (0-20), and no conversion to laparoscopy or laparotomy. The median VAS score was "at rest" of 2, 3, and 1; while under "Valsalva maneuver" was 4, 3, 2, respectively at 2, 4, and 24 h. 77% (20/26) of the whole population had a previous diagnosis of breast cancer. All patients expressed great cosmetic satisfaction both at discharge and after 30/60 days, with an 84.6% of score 5 and a 15.4% of score 4. The highest number of "score 5", concerning the cosmetic outcomes, were clustered in the subgroup of breast cancer survivors with a 95% of score 5 versus 50% of score 5 in patients with no previous breast cancer (p = 0.0073). Similarly, the maximal psychological advantage of the ultra-MIS approach was revealed in the breast cancer survivors (70% of score 5 versus 16% of score 5, p = 0.02).

CONCLUSIONS

The use of 2.4 mm instruments raises the possibility of decreasing post-operative incisional pain, reducing hospitalization, and ensuring better cosmetic and psychological outcomes without increasing complications. The full psychosomatic benefit of ultra-MIS within BRCA mutation carriers is revealed in breast cancer survivors, probably due to the comparison with the mutilating and invasive previous breast surgery.

Surgical outcomes of diaphragmatic resection during cytoreductive surgery for advanced gynecological ovarian neoplasia: A randomized single center clinical trial - DRAGON

INTRODUCTION

Ovarian cancer (OC) represent nearly 4% of gynecologic malignancies and it is often diagnosed at advanced stage. Diaphragmatic surgery, a fundamental step of advanced stage ovarian cancer (ASOC) debulking surgery, is associated with a high post-operative complication incidence, which is supposedly reduced with thoracostomy tube placement. We assessed the role of intra-operative thoracostomy tube placement, as a prevention measure for post-operative complications, after diaphragmatic resection.

METHODS

This was a single center prospective randomized trial. Ovarian cancer patients, who underwent mono-lateral diaphragmatic resection, were randomized 1:1 into two arms. Arm A included patients receiving intra-operative thoracostomy tube placement (TP); Arm B patients did not receive thoracostomy tube placement (NTP). After surgery, all patients underwent seriate chest x-ray and ultrasound to record thoracic complications. Statistical analysis included uni- and multivariable logistic regression model (proportional odds model).

RESULTS

Three hundred seventy-one patients were screened and 88 patients were enrolled: 44 in arm A and B, respectively. No statistically significant differences for intra-operative (p = 0.291) and any grade of post-operative complication (p = 0.072) were detected, while 6.8% of patients in arm A and 22.7% in arm B experienced severe respiratory symptoms (p = 0.035); 18.2% of patients in arm A had a moderate/large pleural effusion versus 65.9% in arm B (p < 0.0001). At multivariable analysis, results confirmed that the NTP-group had a higher risk to receive post-operative thoracostomy tube placement due to pleural effusion than the TP-group (odds ratio [95% Confidence Interval] = 14.5 [3.7-57.4]).

CONCLUSIONS

Thoracostomy intra-operative tube placement after diaphragmatic resection is effective to prevent post-operative thoracic complications. The extension of resection does not influence outcomes and the risk of post-operative thoracentesis or TP remain elevated.

A Multicentric Randomized Trial to Evaluate the ROle of Uterine MANipulator on Laparoscopic/Robotic HYsterectomy for the Treatment of Early-Stage Endometrial Cancer: The ROMANHY Trial

OBJECTIVE

This prospective randomized trial aimed to assess the impact of the uterine manipulator in terms of lymph vascular space invasion (LVSI) in patients undergoing minimally invasive staging for early-stage endometrial cancer.

METHODS

In this multicentric randomized trial, enrolled patients were randomly allocated in two groups according to the no use (arm A) or the use (arm B) of the uterine manipulator. Inclusion criteria were G1-G2 early-stage endometrial cancer at preoperative evaluation. The variables collected included baseline demographic characteristics, perioperative data, final pathology report, adjuvant treatment, and follow-up.

RESULTS

In the study, 154 patients (76 in arm A and 78 in arm B) were finally included. No significant differences were recorded regarding the baseline characteristics. A statistically significant difference was found in operative time for the laparoscopic staging (p=0.005), while no differences were reported for the robotic procedures (p=0.419). The estimated blood loss was significantly lower in arm A (p=0.030). No statistically significant differences were recorded between the two study groups in terms of peritoneal cytology, LVSI (p=0.501), and pattern of LVSI (p=0.790). No differences were detected in terms of overall survival and disease-free survival (p=0.996 and p=0.480, respectively). Similarly, no differences were recorded in the number of recurrences, 6 (7.9%) in arm A and 4 (5.2%) in arm B (p=0.486). The use of the uterine manipulator had no impact on DFS both at univariable and multivariable analyses.

CONCLUSIONS

The intrauterine manipulator does not affect the LVSI in early-stage endometrial cancer patients undergoing laparoscopic/robotic staging.

CLINICAL TRIAL REGISTRATION

https://clinicaltrials.gov, identifier (NCT: 02762214).

The role of semiquantitative evaluation of lympho-vascular space invasion in early stage cervical cancer patients

OBJECTIVE

Lymph vascular space involvement (LVSI) is one of the most important prognostic factors in early stage cervical cancer. Its qualitative evaluation represents a milestone for patient risk stratification and treatment choice, but a semi-quantitative analysis of LVSI may offer a more truthful risk model, as already demonstrated for endometrial cancer. The present study aims to investigate the performances of a semi-quantitative evaluation of LVSI in terms of patient risk assessment.

METHODS

In this retrospective study were enrolled patients underwent surgical treatment for early cervical cancer from January 2009 to October 2018. A semi-quantitative evaluation such as the "three-tiered approach" was used to classify the LVSI pathway: negative vs. focal vs. diffuse.

RESULTS

Diffuse LVSI was found to be a risk factor for lymph node metastasis (OR: 9.844, p < 0.001), and parametrial involvement (OR: 5.566, p < 0.001). Lymph nodal recurrences were more frequent in diffuse LVSI group (LVSI negative vs. focal LVSI p = 0.369; LVSI negative vs. diffuse LVSI p = 0.002; Focal LVSI vs. diffuse LVSI p = 0.214); and so distant recurrences (LVSI negative vs. focal LVSI p = 0.623; LVSI negative vs. diffuse LVSI p = 0.002; Focal LVSI vs. diffuse LVSI p = 0.026). Patients with diffuse LVSI showed a worse disease-free survival (DFS) than patients with focal or absent involvement (DFS LVSI negative vs. focal LVSI p = 0.938; LVSI negative vs. diffuse LVSI p < 0.001; focal LVSI vs. diffuse LVSI p = 0.036).

CONCLUSION

Semi-quantitative evaluation of LVSI may be useful to identify risk patients for shorter disease-free survival and lymphatic and distant recurrences in patients with early stage.

Risk of ovarian recurrence after ovarian conservation in early-stage cervical cancer treated with radical surgery: A propensity match analysis

INTRODUCTION

The primary aim of the present study was to assess the incidence of ovarian metastasis/recurrence and the survival of patients undergoing radical hysterectomy with ovarian conservation (CONSERV) versus oophorectomy (OOPHOR). Secondary aim was to assess the incidence and the characteristics of menopausal symptoms in both groups.

MATERIALS AND METHODS

Retrospective, multi-center, observational cohort study including patients <50 years with clinical FIGO 2009 stage IA1-IB1/IIA1 cervical carcinoma, treated by primary surgical treatment between 02/2007 and 07/2019. One-to-one case-control matching was used to adjust the baseline prognostic characteristics in survival analysis.

RESULTS

419 patients were included. 264 in the OOPHOR (63.0%) and 155 (37.0%) in the CONSERV group. Ovarian transposition was performed in 28/155 (18.1%) patients. 1/264 (0.4%) patient had ovarian metastasis from endocervical adenocarcinoma. After propensity-matching, 310 patients were included in the survival analysis (155 per group). 5-year disease-free survival of patients undergoing CONSERV versus OOPHOR was 90.6% versus 82.2%, respectively (p = 0.028); 5-year overall survival was 94.3% versus 90.8%, respectively (p = 0.157). Two patients (1.3%) developed recurrence on the conserved ovary. CONSERV represented an independent protective factor of recurrence (HR:0.361, 95%CI 0.169-0.769; p = 0.008). 28 (20.6%) in the CONSERV group versus 116 (60.4%) in the OOPHOR group complained of menopausal symptoms during follow up (p < 0.001). HRT was prescribed to 12.0% of patients (median HRT time was 20 months).

CONCLUSION

CONSERV was associated with reduced risk of recurrence and menopausal symptoms in early-stage cervical cancer. As the risk of ovarian metastasis and ovarian recurrence is relatively low, CONSERV in pre-menopausal women has to be considered.

Sentinel lymph node mapping with indocyanine green in cervical cancer patients undergoing open radical hysterectomy: a single-institution series

PURPOSE

To assess the rate of bilateral sentinel lymph node (SLN) detection with indocyanine green (ICG), to evaluate the sensitivity and the negative predictive value of cervical cancer patients undergoing open radical hysterectomy; to compare open versus minimally invasive SLN biopsy performance and to assess factors related to no/unilateral SLN mapping.

METHODS

We retrospectively reviewed consecutive patients with FIGO 2018 stage IA1 with lymph-vascular space involvement to IIB and IIIC1p cervical carcinoma who underwent SLN mapping with ICG followed by systematic pelvic lymphadenectomy between 05/2017 and 06/2020. Patients were divided according to surgical approach for statistical analysis.

RESULTS

Eighty-five patients met inclusion criteria. Twenty-seven (31.8%) underwent open and 58 (68.2%) underwent minimally invasive SLN mapping. No difference in any SLN mapping (laparotomy 92.6% and minimally invasive 91.4%) or in SLN bilateral detection (laparotomy 72.0% and minimally invasive 84.9%) (p = 0.850 and p = 0.222, respectively), in median number of SLNs mapped and retrieved (2 in both groups, p = 0.165) and in site of SLN mapping per hemi-pelvis (right side, p = 0273 and left side, p = 0.618) was evident between open and minimally invasive approach. Per-patient sensitivity of SLN biopsy in laparotomy was 83.3% (95% CI 35.9-99.6%) and the negative predictive value was 95.0% (95% CI 76.0-99.1%). No difference in per-patient sensitivity was noted between two approaches (p = 0.300). None of the analyzed variables was associated with no/unilateral SLN mapping.

CONCLUSION

The use of ICG to detect SLN in cervical cancer treated with open surgery allows a bilateral detection, sensitivity and negative predictive value comparable to minimally invasive surgery with potential advantages of ICG compared to other tracers.

Oncologic and obstetric outcomes after simple conization for fertility-sparing surgery in FIGO 2018 stage IB1 cervical cancer

OBJECTIVE

Conization/simple trachelectomy is feasible in patients with early-stage cervical cancer. Retrospective data suggest that conization with negative lymph nodes could be a safe option for these patients. This study aims to provide oncologic and obstetric outcomes of a large series of patients with 2018 International Federation of Gynecology and Obstetrics (FIGO) stage IB1 cervical cancer managed by conization.

METHODS

Patients with early cervical cancer and a desire to preserve fertility who underwent conization and pelvic lymphadenectomy from January 1993 to December 2019 in two Italian centers were included. Inclusion criteria were: age >18 years and ≤45 years, 2018 FIGO stage IB1, no prior irradiation or chemotherapy, absence of pre-operative radiologic evidence of nodal metastases, a strong desire to preserve fertility, and absence of concomitant malignancies. We excluded patients with confirmed infertility, neuroendocrine tumor, clear cell or mucinous carcinoma.

RESULTS

A total of 42 patients were included. The median age was 32 years (range 19-44) and median tumor size was 11 mm (range 8-20). Squamous cell carcinoma was found in 27 (64.3%). Grade 3 tumor was present in 7 (16.7%) patients and lymphovascular space involvement was detected in 15 (35.7%). At a median follow-up of 54 months (range 1-185), all patients were alive without evidence of disease. In the entire series three patients experienced recurrence resulting in an overall recurrence rate of 7.1%. All the recurrences occurred in the pelvis (2 in the cervix and 1 in the lymph nodes), resulting in a 3-year disease-free survival of 91.6%. Twenty-two (52%) patients tried to conceive; 18 pregnancies occurred in 17 patients and 12 live births were reported (6 pre-term and 6 term pregnancies). Two miscarriages were recorded, one first trimester and one second trimester fetal loss.

CONCLUSIONS

Our study showed that conization is feasible for the conservative management of women with stage IB1 cervical cancer desiring fertility. Oncologic outcomes appear favorable in this series of patients. Future prospective studies will hopefully provide further insight into this important question.

Protective Role of Conization Before Radical Hysterectomy in Early-Stage Cervical Cancer: A Propensity-Score Matching Study

PURPOSE

The purpose of this study was to assess the prognostic role and the perioperative outcomes of conization performed before radical hysterectomy in early-stage cervical carcinoma.

METHODS

This multicenter, retrospective observational cohort study included patients with FIGO 2009 stage IB1 cervical carcinoma treated with radical hysterectomy between June 2004 and June 2019. Patients were divided into two groups according to conization before radical surgery. One-to-one case-control matching was used to adjust the baseline characteristics.

RESULTS

A total of 332 patients were included after propensity matching (166, 50% in each group). Twenty-four of 166 (14.4%) and 142 of 166 (85.6%) conization patients had negative and positive surgical margins on the conization specimen, respectively. No difference in intra- and postoperative complications was noted between the two groups (p = 0.542 and p = 0.180, respectively). Patients undergoing conization before radical hysterectomy received less adjuvant treatment (p < 0.001) and had a better 5-year disease-free survival (DFS) than patients who did not receive conization (89.8% vs. 80.0%, respectively; p = 0.010). No difference in 5-year overall survival (OS) (97.1% vs. 91.4%, respectively; p = 0.114) or recurrence pattern (p = 0.115) was reported between the two groups. Factors independently related to higher risk of recurrence were pathologic tumor diameter >20 mm and no conization before radical hysterectomy (p = 0.011 and p = 0.018, respectively). The only independent variable influencing OS was pathologic tumor diameter >20 mm (p = 0.020).

CONCLUSIONS

Conization before radical hysterectomy was associated with improved DFS and lower probability of receiving adjuvant treatment. No difference in perioperative complications and OS was evident. Tumor diameter >20 mm was found to be the only independent risk factor affecting OS in both groups.

Uterine tumor resembling ovarian sex-cord tumor: Conservative surgery with successful delivery and case series

Uterine tumor resembling ovarian sex-cord tumor (UTROSCT) is a rare distinct cancer included in the current World Health Organization classification of endometrial stromal tumors. A battery of immunohistochemical markers are necessary for accurate diagnosis. Although few case reports and case series have been documented and therefore providing robust prognostic information several authors agree to consider UTROSCT as a low malignant potential tumour. In literature only five cases of conservative management were reported. We reported our experience and a review of conservative cases of literature. In this article we describe a series of 10 cases of UTROSCT and their clinical and pathologic feature. We report two cases of conservative surgical approach obtaining a successfully pregnancies. All of the patients are still alive. In conclusion, fertility sparing surgery should be offered to patients who wish preserve their fertility however radical surgery must be considerate after childbirth. Close follow-up is required for all patients due to the lack of prognostic biomarkers and long follow up is needed to evaluate safety of conservative surgery.

Investigating the possible impact of peritoneal tumor exposure amongst women with early stage cervical cancer treated with minimally invasive approach

INTRODUCTION

Recent findings show a detrimental impact of the minimally invasive approach on patients with early stage cervical cancer (ECC). Reasons beyond these results are unclear. The aim of the present article is to investigate the possible role of peritoneal contamination during intracorporeal colpotomy.

METHODS

patients with early stage cervical cancer were divided into 2 groups: no intraperitoneal exposure (N-IPE) intraperitoneal exposure (IPE) during minimally invasive surgery. Patients of the 2 groups were propensity-matched according to the major risk factors.

RESULTS

226 cases of the IPE group had a significant worst prognosis than the 142 cases of the N-IPE group (4.5-years disease free survival: 86.6% vs 95.9% respectively, p = 0.005), while N-IPE had similar survival to open surgery (4.5-years disease free survival: 95.0% vs 90.5% respectively, p = 0.164). Distant recurrence was more frequent among IPE patients with a borderline significance (3.5% vs 0.4% among IPE and N-IPE respectively, p = 0.083). On multivariate analysis, intraperitoneal tumor exposure was an independent prognostic factors for worse survival; patients belonging to the N-IPE group had a risk of recurrence of about 3-fold lower compared to patients of the IPE group (hazard ratio: 0.37, 95% confidence interval: 0.15-0.88, p = 0.025).

CONCLUSION

it would be advisable that further prospective studies investigating the efficacy of different surgical approach in ECC take into consideration of this issue. Moreover, all other measures that could potentially prevent peritoneal exposure of tumor should be adopted during minimally invasive surgery for early stage cervical cancer to provide higher survival outcomes.

Percutaneous-Assisted versus Laparoscopic Hysterectomy: A Prospective Comparison

OBJECTIVE

To evaluate the feasibility of percutaneous approach, we prospectively compared our experience in percutaneous-assisted hysterectomy (PSS-H) with that in a series of laparoscopic hysterectomies (LPS-Hs).

METHODS

In this multicentric cohort study, from May 2015 to October 2017, 160 patients affected by benign and malignant gynecological conditions were considered eligible for minimally invasive surgery (MIS): 80 patients received PSS-H and 80 LPS-H. In each group, 30 cases of low-/intermediate-risk endometrial cancer were enrolled. For both groups, we documented preoperative outcomes, postoperative pain, and cosmetic outcomes.

RESULTS

No statistically significant differences were noted in baseline characteristics or operative time. We observed significant differences in estimated blood loss: median of 50 cc (PSS-H) and 100 cc (LPS-H) (p = 0.0001). In LPS-H, we reported 4 (5.0%) intraoperative complications and 1 (1.3%) in PSS-H. Thirty-day complications were 4 (5%) in PSS-H and 11 (13.8%) in LPS-H (p = 0.058). No significative differences were found in visual analog scale score, despite a relevant disparity in cosmetic outcome (p = 0.0001). For oncological cases, the 2 techniques had comparable intra- and postoperative outcomes and oncological accuracy.

CONCLUSIONS

In this study, we reported that PSS-H is comparable to LPS-H for intra- and perioperative outcomes and postoperative pain, while PSS-H seems to be superior in cosmetic outcomes and patient satisfaction. PSS-H may represent a valid alternative in ultra-MIS for benign gynecological conditions and low-/intermediate-risk endometrial cancer.

Role of ultrasound in the detection of recurrent ovarian cancer: a review of the literature

Nowadays, no standard approaches for follow up in ovarian cancer (OC) patients exist. While the role of ultrasound (US) is well defined in primary diagnosis of OC, it is still controversial during follow-up of surgically treated OC. The aim of this narrative review is to evaluate the role described in literature of US imaging in the early detection of OC recurrences. A review of the English literature present in PubMed and SCOPUS of the past 30 years regarding the use of US in recurrent ovarian cancer (ROC) has been performed. The following keywords were searched: "ultrasound and recurrent ovarian cancer" and "intraoperative ultrasound and recurrent ovarian cancer". A total of 15 articles were selected. US was mainly adopted in the detection of recurrent pelvic disease after debulking surgery, after fertility sparing surgery (FSS) and as an intraoperative tool for localization of OC recurrences. If introduced as a standard follow-up procedure, US may have a central role in the early detection of pelvic OC recurrence, in ovarian localization of relapses of borderline ovarian tumor (BOT) and early stages disease treated with FSS; it may also play an important role in the intraoperative localization of previously suspected secondary lesions.

Should the Number of Metastatic Pelvic Lymph Nodes be Integrated into the 2018 Figo Staging Classification of Early Stage Cervical Cancer?

Introduction: Lymph node status has become part of the new staging system for cervical cancer (CC). It has been shown that patients staged as IIIC1 had heterogeneous prognoses and, in some cases, experienced better outcomes than patients with lower stages. We evaluated the impact of the number of metastatic pelvic lymph nodes (MPLNs) among patients with stage IIIC1 cervical cancer. Methods: Survival analyses were conducted in order to identify the best cut-off prognostic value relative to the number of MPLNs. Disease free survival (DFS) was considered the main outcome. Results: 541 patients were included in the study. Eighty-nine patients were of stage IIIC1. The best prognostic cut-off value of the number of MPLNs was 2. Patients with >2 MPLNs (n > 2 group) had worse DFS compared with those having <2 (N1-2 group) (5 yr DFS: 54.7% vs. 78.1%, p value = 0.006). Multivariate analyses demonstrated that the extent of MPLNs had little impact on DFS and that replacement of IIIC1 staging with N1-2 and n > 2 grouping provided a better, statistically significant model (p value = 0.006). Discussion: Using a cut-off value of 2, the number of MPLNs could better predict prognostic outcomes within stage IIIC1 cervical cancer and have potential implications for therapeutic decision-making in the treatment of patients with stage IIIC1 CC.

Laparoscopic vs percutaneous hysterectomy in obese patients: a prospective evaluation

BACKGROUND

Treatment of obese female patients represents a real challenge. Indeed, obesity among women has reached epidemic levels not only elevating the cardiovascular and endocrinological risks, but also increasing the incidence of various gynecological pathologies (e.g. endometrial cancer and hyperplasia, uterine fibroids, genital prolapse) which commonly require hysterectomy as a surgical solution. In the last decade, minimally invasive surgery has emerged as an approach reducing the invasiveness of the standard laparoscopic surgical procedures while maintaining efficacy and feasibility. As such, in this study we aimed to evaluate the feasibility of percutaneous hysterectomy (PSS-H) approach in obese patients by reporting the first prospective comparison between the PSS-H to laparoscopic hysterectomy (LPS-H).

METHODS

In this multicentric comparative prospective study, 45 patients affected by benign and malignant gynecological conditions were considered eligible for minimally invasive surgery (MIS). Fifteen patients received PSS-H and 30 LPS-H. All patients enrolled received a total hysterectomy ± bilateral salpingo-oophorectomy, with or without lymph nodal staging.

RESULTS

No statistically significant differences were noted in operative time and estimated blood loss between the two groups. Four patients in PSS-H group and 3 in LPS-H group received lymph node staging. A multifunctional energy device was used in all PSS-H and 73.3% of LPS-H procedures (p=0.038). There were no conversions to laparotomy in either group and similarly there were no conversions to conventional laparoscopy in the PSS-H group. In the LPS-H group, there was one (3.3%) case of major bleeding( ≥ 500 mls). We recorded one vaginal cuff bleeding in PSS-H, whereas for LPS-H we reported 4 (13.3%) 30-days complications (p=0.651). No differences in visual analogue scale (VAS) score were recorded. A significant disparity was noted in cosmetic outcome at discharge (p=0.001), but not after 30 days.

CONCLUSION

We demonstrated for the first time, in a prospective comparison between PSS and LPS approaches, that PSS-H may represent a valid alternative to performing total hysterectomy in obese patients.

Azobenzene-based polymers: emerging applications as cell culture platforms

This minireview highlights the fundamental landmarks towards the application of azobenzene-containing materials as light-responsive cell culture substrates.

Light-responsive polymer brushes: active topographic cues for cell culture applications

Azopolymer brushes were patterned using interference lithography and erased using ultrasonication. This substrate was able to induce cell orientation.

Restoration of tumor suppression in prostate cancer by targeting the E3 ligase E6AP

Restoration of tumor suppression is an attractive onco-therapeutic approach. It is particularly relevant when a tumor suppressor is excessively degraded by an overactive oncogenic E3 ligase. We previously discovered that the E6-associated protein (E6AP; as classified in the human papilloma virus context) is an E3 ligase that has an important role in the cellular stress response, and it directly targets the tumor-suppressor promyelocytic leukemia protein (PML) for proteasomal degradation. In this study, we have examined the role of the E6AP-PML axis in prostate cancer (PC). We show that knockdown (KD) of E6AP expression attenuates growth of PC cell lines in vitro. We validated this finding in vivo using cell line xenografts, patient-derived xenografts and mouse genetics. We found that KD of E6AP attenuates cancer cell growth by promoting cellular senescence in vivo, which correlates with restoration of tumor suppression by PML. In addition, we show that KD of E6AP sensitizes cells to radiation-induced death. Overall, our findings demonstrate a role for E6AP in the promotion of PC and support E6AP targeting as a novel approach for PC treatment, either alone or in combination with radiation.

Shedding light on azopolymer brush dynamics by fluorescence correlation spectroscopy

Understanding the response to illumination at a molecular level as well as characterising polymer brush dynamics are key features that guide the engineering of new light-stimuli responsive materials. Here, we report on the use of a confocal microscopy technique that was exploited to discern how a single molecular event such as the photoinduced isomerisation of azobenzene can affect an entire polymeric material at a macroscopic level leading to photodriven mass-migration. For this reason, a set of polymer brushes, containing azobenzene (Disperse Red 1, DR) on the side chains of poly(methacrylic acid), was synthesised and the influence of DR on the polymer brush dynamics was investigated for the first time by Fluorescence Correlation Spectroscopy (FCS). Briefly, two dynamics were observed, a short one coming from the isomerisation of DR and a long one related to the brush main chain. Interestingly, photoinduced polymer aggregation in the confocal volume was observed.

The presence of myofibroblasts, smooth muscle cells and elastic fibers in the lymphatic collectors of horses

Horses are highly susceptible to lymphedema. Knowledge of the morphological components of lymphatic collectors is therefore essential to understanding the function of the lymphatic system. A better knowledge of the lymphatic system allows the development of more effective treatments against lymphedema. The composition of hypodermal and deep lymphatic collectors was investigated with immunohistochemical staining, using antibodies against proteins of the collector walls from the skin in the hind limbs of 10 healthy horses. Lymphatic collectors can be subdivided into passive (elastic fibers) and active (smooth muscle cells and myofibroblasts) components. The presence of myofibroblasts in equine lymphatic collectors has not previously been described. The high concentration of myofibroblasts, especially in the dermal collectors, suggests their possible importance in lymph flow. Myofibroblasts may act as pacemaker cells for the contraction of smooth muscle cells and probably play a role in the proliferation of smooth muscle cells during training, as there appears to be correlation between the percentage of smooth muscle cells in equine lymphatic collectors and level of physical fitness. The response of the lymphatics to stimulation may allow effective treatment of lymphedema without using pharmacological drugs. The high percentage of elastic fibers (approximately 45% in equine lymphatic collectors) indicates the importance of passive components within the lymph flow.

Desmoplakin and Plakoglobin - Specific Markers of Lymphatic Vessels in the Skin?

Monoclonal antibodies against Desmoplakin and Plakoglobin were tested for their suitability as specific markers of lymphatic vessels. The tissue samples were taken from horse skin in an attempt to establish the horse as a model for human lymphatic diseases. To obtain a clear, positive identification of blood and lymphatic vessels, immunohistochemical staining with antibodies against vascular endothelial growth factor receptor 3 (VEGFR-3) and platelet endothelial adhesion molecule (PECAM-1, CD31), was compared with Desmoplakin and Plakoglobin. Because anti-VEGFR-3 is specific for lymphatic vessels in the skin while anti-CD31 stains blood and lymphatic vessels as well, it can be concluded that VEGFR-3(-)/CD31(+) vessels are blood vessels and VEGFR-3(+)/CD31(+) vessels are lymphatic vessels. It was documented on serial sections that Plakoglobin stains both blood and lymphatic vessels. However, Desmoplakin did not stain several positively identified lymphatic vessels. Therefore, Desmoplakin and Plakoglobin antibodies are not specific markers of lymphatic vessels in the skin and the staining pattern is tissues and species dependent.

Spatial structures of the bradykinin potentiating peptide F from Agkistrodon piscivorus piscivoris venom

Bradykinin potentiating peptides usually show two different activities, potentiation of bradykinin and inhibition of angiotensin converting enzyme (ACE). Exceptions of this rule have been found suggesting that both effects occur independently. This study of peptide F by means of NMR spectroscopy shows clearly two different main conformations of the molecule. These different conformations may be the reason for the different activities.