Project description:Background Surgery with total gastrectomy and D2 lymph node dissection (LND) has been recommended as the standard treatment for patients with advanced upper and middle gastric carcinoma and/or Siewert type II/III adenocarcinoma of the esophagogastric junction (AEG). However, whether the No. 10 lymph node (No. 10 LN, also known as splenic hilar LN) should be dissected in total gastrectomy remains controversial. We aimed to evaluate whether the No. 10 LND with spleen preservation has survival benefit for patients with gastric cancer and/or AEG who underwent the total gastrectomy. Methods The PubMed, Embase, the Cochrane Library, ClinicalTrials.gov and American Society of Clinical Oncology.org (ASCO.org) were electronically searched to identify eligible studies. The primary outcome was the survival rate, and secondary outcomes included the disease-free survival (DFS) rate and side effects. The Review Manager 5.3.5 software was used for the meta-analysis. The odds ratio (OR) and mean difference with 95% confidence interval (CI) were calculated. The statistical heterogeneity was assessed using chi-square (χ2) and I2 tests. Results Eight studies enrolling a total of 4,131 patients were eligible for our review. The meta-analysis results demonstrated that the No. 10 LND group was significantly better than the non-No. 10 LND group in terms of the 3- (OR =0.71, 95% CI: 0.62–0.81, P<0.00001) and the 5-year (OR =0.66, 95% CI: 0.58–0.75, P<0.00001) survival rates but not in the 1-year survival rate (OR =0.91, 95% CI: 0.75–1.11, P=0.36). The DFS rates in the No. 10 LND group were significantly increased after 1 (OR =0.76, 95% CI: 0.61–0.93, P=0.008), 3 (OR =0.69, 95% CI: 0.60–0.81, P<0.00001), and 5 (OR =0.66, 95% CI: 0.56–0.76, P<0.00001) years compared with those in the non-No. 10 LND group. Discussion Evidence shows that the No. 10 LND with spleen preservation can improve the survival and the DFS rates for patients with gastric cancer and/or Siewert type II/III AEG who underwent the total gastrectomy. High-quality prospective trials are expected.
Project description:There has still not been a consensus in aspects of survival benefit and safety on No.12a lymph nodes (LNs) dissection for gastric cancer patients. This study was aimed to evaluate this issue for patients with distal or total gastrectomy. Patients were retrospectively divided into 12aD+ group (with No.12a dissection) and 12aD-group (without No.12a dissection). Clinicopathologic characteristics, survival rate, morbidity and mortality were compared. There were 670 patients in 12aD+ group, while 567 in 12aD-group. The baselines between the two groups were comparable. The No.12a LNs metastasis ratio was 11.6% and higher in lower third tumor. The metastasis of No.5 LNs, N stage and M stage were correlated to metastasis of No.12a LNs. There was no difference in morbidity nor mortality between the two groups. The 5-year overall survival rates (5-y OS) were 59.6% and 55.1% in 12aD+ group and 12aD-group respectively (P = 0.075). The 5-y OS of patients with negative and positive No.12a LNs were 62.3% and 24.1%. The survival of stage III patients with No.12a positive was better than that of stage IV patients. The 5-y OS were better in 12aD+ group for patients with ages more than 60, lower third tumor, distal gastrectomy, N3 status, or III stages compared with 12aD-group. No.12a lymphadenectomy was independently better prognostic factors for stage III patients. No.12a LNs metastasis should not be considered as distant metastasis. No.12a lymphadenectomy can be performed safely and should be indicated for potentially curable progressive stage tumors requiring distal gastrectomy and might be reserved in patients with stage I or II, or upper third tumor.
Project description:BackgroundLymph node metastasis is an established predictor of poor outcome for adrenocortical carcinoma (ACC); however, routine lymphadenectomy during surgical resection of ACC is not widely performed and its therapeutic role remains unclear.MethodsPatients undergoing margin-negative resection for localized ACC were identified from a multi-institutional database. Patients were stratified into 2 groups based on the surgeon's effort or not to perform a lymphadenectomy as documented in the operative note. Clinical, pathologic, and outcome data were compared between the 2 groups.ResultsOf 120 patients who met inclusion criteria from 1993 to 2014, 32 (27 %) underwent lymphadenectomy. Factors associated with lymphadenectomy were tumor size (12 vs. 9.5 cm; p = .007), palpable mass at presentation (26 vs. 12 %; p = .07), suspicious lymph nodes on preoperative imaging (44 vs. 7 %; p < .001), and need for multivisceral resection (78 vs. 36 %; p < .001). Median number of lymph nodes harvested was higher in the lymphadenectomy group (5.5 vs. 0; p < .001). In-hospital mortality (0 vs. 1.3 %; p = .72) and grade 3/4 complication rates (0 vs. 12 %; p = .061) were not significantly different. Patients who underwent lymphadenectomy had improved overall survival (5-year 76 vs. 59 %; p = .041). The benefit of lymphadenectomy on overall survival persisted on multivariate analysis (HR = 0.17; p = .006) controlling for adverse preoperative and intraoperative factors associated with lymphadenectomy, such as tumor size, palpable mass, irregular tumor edges, suspicious nodes on imaging, and multivisceral resection.ConclusionsIn this multicenter study of adrenocortical carcinoma patients undergoing R0 resection, the surgeon's effort to dissect peritumoral lymph nodes was independently associated with improved overall survival.
Project description:The full optimal extent of a pelvic lymph node dissection (PLND) at time of radical cystectomy (RC) has not yet been determined. The diagnostic role of LND is clear and is extremely important for identifying those who may benefit from adjuvant therapy. While retrospective analyses have demonstrated improved survival when the number of lymph nodes is increased and extended LNDs (eLNDs) are performed, these results have yet to be borne out in prospective randomized phase III trials. The recently published LEA AUO AB 25/02 trial is a promising attempt to determine the efficacy of eLND, but unfortunately falls short because of its limited design and therefore, did not demonstrate an improvement in recurrence-free survival (RFS). In an era of increased utilization of neoadjuvant chemotherapy (NAC) providing survival benefit, the ability to demonstrate improved survival with eLND is even more challenging. Currently, we are awaiting the results of SWOG S1011, expectations of achieving a positive trial with improved RFS remains unlikely.
Project description:To use a number of methods to control for confounding and selection bias to examine the association between lymphadenectomy and survival in a large cohort of women with endometrial cancer.A retrospective cohort study using the National Cancer Data Base was performed to identify women with endometrioid adenocarcinoma of the endometrium who underwent hysterectomy with or without lymphadenectomy from 1998 to 2011. Traditional regression analysis, propensity score, and an instrumental variable using regional variation in the rate of lymphadenectomy as an instrument were used to examine the association between lymphadenectomy and survival.A total of 151,089 women treated at 1,336 hospitals were identified; 99,052 (65.6%) patients underwent lymphadenectomy, whereas 52,037 (34.4%) did not. In a multivariable regression model, lymphadenectomy was associated with a 16% reduction in mortality (hazard ratio [HR] 0.84, 95% confidence interval [CI] 0.81-0.87). The results were similar after adjustment for adjuvant therapy (HR 0.85, 95% CI 0.82-0.87). The results were largely unchanged and suggested that lymphadenectomy was associated with improved survival after application of a propensity score analysis. In contrast, in the instrumental variable analysis, there was not a statistically significant association between lymphadenectomy and survival (HR 0.75, 95% CI 0.53-1.06), even after adjustment for adjuvant treatment (HR 0.76, 95% CI 0.54-1.06). The results were unchanged for women with T1A and T1B tumors.Lymphadenectomy is associated with a modest, if any, effect on survival for women with endometrial cancer.
Project description:BackgroundDespite that pelvic and para-aortic lymphadenectomy (PPaLND) is recommended as part of accurate surgical staging by International Federation of Gynecology and Obstetrics (FIGO) in endometrial cancer, the impact of para-aortic lymphadenectomy on survival remains controversial. The aim of this work is to evaluate the survival benefits or risks in endometrial cancer patients who underwent surgical staging with or without para-aortic lymphadenectomy using meta-analysis.MethodsLiterature search was undertaken using PubMed, Embase, and Cochrane Library databases for relevant articles published between January 1, 1990, and January 1, 2017, without language restriction. The primary outcome was overall survival (OS); progression-free survival (PFS)/recurrence-free survival (RFS)/disease-free survival (DFS)/disease-related survival (DRS) was also analyzed. Subgroup analysis and sensitivity analysis were conducted to investigate the source of heterogeneity. Quality assessments were performed by Newcastle-Ottawa Quality Assessment Scale (NOS). Publication bias was evaluated by using Begg and Egger tests. The hazard ratio (HR) was pooled with random-effects or fixed-effects model as appropriate.ResultsEight studies with a total of 2793 patients were included. OS was significantly longer in PPaLND group than in pelvic lymphadenectomy (PLND) group for patients with endometrial cancer [HR 0.68; 95% confidence interval (CI) 0.55-0.84, P < .001, I = 12.2%]. Subgroup analysis by recurrence risk explored the same association in patients at intermediate- or high-risk (HR 0.52; 95% CI 0.39-0.69, P < .001, I = 41.4%), but not for low-risk patients (HR 0.48; 95% CI 0.21-1.08, P = .077, I = 0). PPaLND with systematic resection of all para-aortic nodes up to renal vein also improved PFS/RFS/DFS/DRS, compared with PLND (HR 0.52, 95% CI 0.37-0.72, P < .001, I = 0). No publication bias was observed among included studies.ConclusionPPaLND is associated with favorable survival outcomes in endometrial cancer patients with intermediate- or high-risk of recurrence compared with PLND, particularly with regards to OS. PPaLND with systematic resection of all para-aortic nodes up to renal vein also improve PFS compared with PLND. Further large-scale randomized clinical trials are required to validate our findings.
Project description:BackgroundThe Human Cell Atlas is a large international collaborative effort to map all cell types of the human body. Single-cell RNA sequencing can generate high-quality data for the delivery of such an atlas. However, delays between fresh sample collection and processing may lead to poor data and difficulties in experimental design.ResultsThis study assesses the effect of cold storage on fresh healthy spleen, esophagus, and lung from ≥ 5 donors over 72 h. We collect 240,000 high-quality single-cell transcriptomes with detailed cell type annotations and whole genome sequences of donors, enabling future eQTL studies. Our data provide a valuable resource for the study of these 3 organs and will allow cross-organ comparison of cell types. We see little effect of cold ischemic time on cell yield, total number of reads per cell, and other quality control metrics in any of the tissues within the first 24 h. However, we observe a decrease in the proportions of lung T cells at 72 h, higher percentage of mitochondrial reads, and increased contamination by background ambient RNA reads in the 72-h samples in the spleen, which is cell type specific.ConclusionsIn conclusion, we present robust protocols for tissue preservation for up to 24 h prior to scRNA-seq analysis. This greatly facilitates the logistics of sample collection for Human Cell Atlas or clinical studies since it increases the time frames for sample processing.
Project description:The therapeutic benefit of lymphadenectomy in patients exhibiting endometrial cancer (EC) remains controversial. The aim of the present study was to determine whether the addition of para-aortic lymphadenectomy to pelvic lymphadenectomy (PLND) improves survival in patients with endometrioid type EC. A single tertiary-center, retrospective analysis was conducted in a total of 186 patients who were surgically treated with either PLND alone (n=97) or combined pelvic and para-aortic lymphadenectomy (PPaLND; n=89). Adjuvant treatments were assigned according to the Gynecologic Oncology Group (GOG) risk of recurrence analysis. The primary endpoint of the present study was progression-free survival (PFS). The median follow-up time was 38 months (95% confidence interval, 36.47-42.90) for all patients. No statistically significant differences were identified between the two groups in terms of overall survival (OS), PFS or time to progression (TTP). Kaplan-Meier estimates of three-year OS, PFS and TTP for patients with low or low-intermediate risk were as follows: PLND, 100, 98.7 and 98.7%, respectively; and PPaLND, all 100%. The estimated three-year OS, PFS and TTP for patients with high or high-intermediate risk were as follows: PLND, 92.3, 81.3 and 81.3%; and PPaLND, 90.7, 77.1 and 80.9%, respectively. No statistically significant differences were detected in the three-year OS, PFS and TTP between the lymphadenectomy groups, regardless of the GOG risk of recurrence (PLND, 98.4, 95.3 and 95.3%; and PPaLND, 94.9, 87.1 and 89.4%). Therefore, the combination treatment, PPaLND did not provide any survival advantage over pelvic lymphadenectomy alone.
Project description:ImportanceThe long-term survival of patients with laparoscopic total gastrectomy combined with spleen-preserving splenic hilar lymphadenectomy (LSTG) for advanced upper-third gastric cancer (AUTGC) and the association of splenic hilar lymph node (LN-10) metastasis with survival remain controversial.ObjectiveTo evaluate the long-term outcomes of LSTG and the value index of LN-10 metastasis for patients with AUTGC.Design, setting, and participantsThe Chinese Laparoscopic Gastrointestinal Surgery Study 4 (CLASS-04) was a prospective, multicenter, single-arm trial that involved 19 centers in China. A total of 251 eligible patients with clinical stage T2, T3, or T4a upper-third gastric cancer without distant metastases were enrolled from September 1, 2016, to October 31, 2017. The final follow-up was on December 31, 2020.InterventionsAll patients were enrolled to undergo LSTG.Main outcomes and measuresThe main outcomes were the 3-year overall survival (OS) and disease-free survival (DFS). Multivariate analyses were used to explore the association of LN-10 metastasis with survival.ResultsAmong the 251 patients, 246 (98.0%; mean [SD] age, 60.1 [9.4] years; 197 [80.1%] male) underwent LSTG and completed the study. The 3-year OS was 79.1% (95% CI, 74.0%-84.2%), and the 3-year DFS was 73.1% (95% CI, 67.4%-78.8%). In addition, the 3-year therapeutic value index of LN-10 dissection was 4.5, exceeding the indexes for the partial D2 LN group (including LNs 5, 6, 11d, and 12a). Nineteen patients (7.7%) with LN-10 metastasis had significantly worse survival than the nonmetastasis group, and multivariate analysis revealed that splenic LN-10 metastasis was an independent risk factor (OS: hazard ratio [HR], 2.38; 95% CI, 1.08-5.26; P = .03; DFS: HR, 2.28; 95% CI, 1.12-4.63; P = .02). Moreover, patients with LN-10 metastasis were more likely to have recurrence (42.1% vs 20.7%, P = .03), especially when multiple site metastasis was present (21.1% vs 4.4%, P = .01). However, patients with LN-10 metastasis who received adjuvant chemotherapy had significantly better OS and DFS than those without adjuvant chemotherapy and achieved the same oncologic effect as those without LN-10 metastasis.Conclusions and relevanceThis results of this study suggest that LSTG for AUTGC has feasible long-term outcomes. In addition, patients with LN-10 metastasis may have worse survival and may be more prone to recurrence.