scholarly journals Lymph node yield after rectal resection in patients treated with neoadjuvant radiation for rectal cancer: A systematic review and meta-analysis

2017 ◽  
Vol 72 ◽  
pp. 84-94 ◽  
Author(s):  
Robert Mechera ◽  
Tibor Schuster ◽  
Robert Rosenberg ◽  
Benjamin Speich
Keyword(s):  
Systematic Review ◽  
Rectal Cancer ◽  
Lymph Node ◽  
Rectal Resection ◽  
Meta Analysis ◽  
Lymph Node Yield ◽  
Node Yield

Lymph node yield during surgery after neoadjuvant therapy compared to surgery without neoadjuvant therapy in patients with esophageal, gastric, pancreatic, or rectal carcinoma: systematic review and meta-analysis (Preprint)

2021 ◽  
Author(s):  
Ulrich Ronellenfitsch ◽  
Nika Maximov ◽  
Juliane Friedrichs ◽  
Jorg Kleeff
Keyword(s):  
Systematic Review ◽  
Lymph Node ◽  
Neoadjuvant Chemotherapy ◽  
Neoadjuvant Therapy ◽  
Meta Analysis ◽  
Neoadjuvant Treatment ◽  
Surrogate Marker ◽  
Lymph Node Yield ◽  
Gastrointestinal Carcinomas ◽  
Node Yield

BACKGROUND The lymph node yield is an important surrogate parameter for assessing the oncological radicality of the resection of gastrointestinal carcinomas and a prognostic factor in these diseases. It remains unclear if and to what extent neoadjuvant chemotherapy, radiotherapy or chemoradiotherapy, which have become established treatments for carcinoma of the esophagus, stomach, and rectum and are increasingly used in pancreatic carcinoma, affect the lymph node yield. OBJECTIVE This systematic review with meta-analysis is conducted with the aim of summarizing the available evidence regarding the oncological surrogate marker lymph node yield in patients with gastrointestinal carcinomas undergoing surgery after neoadjuvant treatment compared to those operated without neoadjuvant therapy. METHODS Studies comparing oncological resection of esophageal, stomach, pancreatic and rectal carcinoma with and without prior neoadjuvant therapy are eligible for inclusion regardless of study design. Publications will be identified with a defined search strategy in the electronic databases PubMed and Cochrane Library. The primary endpoint of the analysis is the number of lymph nodes identified in the resected specimen. Secondary endpoints include number of harvested metastatic lymph nodes, operation time, postoperative complications, pTNM staging, and overall and recurrence-free survival time. Using suitable statistical methods, the endpoints between patients with and without neoadjuvant therapy as well as in defined subgroups (neoadjuvant chemotherapy, neoadjuvant radiotherapy, neoadjuvant chemoradiotherapy, and esophageal, gastric, pancreatic, and rectal cancer) will be compared. RESULTS As of October 2021, we started with the data collection. CONCLUSIONS This systematic review with meta-analysis is conducted with the aim of summarizing the available evidence regarding the oncological surrogate marker lymph node yield in patients with gastrointestinal carcinomas undergoing surgery after neoadjuvant treatment compared to those operated without neoadjuvant therapy. CLINICALTRIAL This systematic review is registered at PROSPERO, ID: 218459.

scholarly journals Lymph node yield during surgery after neoadjuvant therapy compared to surgery without neoadjuvant therapy in patients with esophageal, gastric, pancreatic, or rectal carcinoma: systematic review and meta-analysis

2021 ◽  
Author(s):  
Ulrich Ronellenfitsch ◽  
Nika Maximov ◽  
Juliane Friedrichs ◽  
Jörg Kleeff
Keyword(s):  
Systematic Review ◽  
Lymph Node ◽  
Neoadjuvant Chemotherapy ◽  
Lymph Nodes ◽  
Neoadjuvant Therapy ◽  
Rectal Carcinoma ◽  
Meta Analysis ◽  
Lymph Node Yield ◽  
Gastrointestinal Carcinomas ◽  
Node Yield

Abstract Background: The lymph node yield is an important surrogate parameter for assessing the oncological radicality of the resection of gastrointestinal carcinomas and a prognostic factor in these diseases. It remains unclear if and to what extent neoadjuvant chemotherapy, radiotherapy or chemoradiotherapy, which have become established treatments for carcinoma of the esophagus, stomach, and rectum and are increasingly used in pancreatic carcinoma, affect the lymph node yield. This systematic review and meta-analysis intents to summarize the available evidence on the topic.Methods: Studies comparing oncological resection of esophageal, stomach, pancreatic and rectal carcinoma with and without prior neoadjuvant therapy are eligible for inclusion regardless of study design. Publications will be identified with a defined search strategy in the electronic databases PubMed and Cochrane Library. The primary endpoint of the analysis is the number of lymph nodes identified in the resected specimen. Secondary endpoints include number of harvested metastatic lymph nodes, operation time, postoperative complications, pTNM staging, and overall and recurrence-free survival time. Using suitable statistical methods, the endpoints between patients with and without neoadjuvant therapy as well as in defined subgroups (neoadjuvant chemotherapy, neoadjuvant radiotherapy, neoadjuvant chemoradiotherapy, and esophageal, gastric, pancreatic, and rectal cancer) will be compared Discussion: This systematic review with meta-analysis is conducted with the aim of summarizing the available evidence regarding the oncological surrogate marker lymph node yield in patients with gastrointestinal carcinomas undergoing surgery after neoadjuvant treatment compared to those operated without neoadjuvant therapy.Systematic review registration: This systematic review has been submitted for registration at PROSPERO, ID: 218459.

Risk of nodal disease in patients with MRI-detected extramural vascular invasion in rectal cancer: a systematic review and meta-analysis

2020 ◽  
pp. 030089162097586
Author(s):  
Pratik Tripathi ◽  
Zhen Li ◽  
Yaqi Shen ◽  
Xuemei Hu ◽  
Daoyu Hu
Keyword(s):  
Systematic Review ◽  
Rectal Cancer ◽  
Lymph Node ◽  
Vascular Invasion ◽  
Literature Search ◽  
Meta Analysis ◽  
Adjuvant Chemoradiotherapy ◽  
Cochrane Library ◽  
Nodal Disease ◽  
The Impact

Background: The impact of magnetic resonance imaging–detected extramural vascular invasion (mrEMVI) in distant metastasis is well known but its correlation with prevalence of lymph node metastasis is less studied. The aim of this systematic review and meta-analysis was to assess the prevalence of nodal disease in mrEMVI–positive and negative cases in rectal cancer. Methods: Following guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses, a systematic literature search in PubMed, Web of Science, Cochrane Library, and EMBase was carried out to identify relevant studies published up to May 2019. Results: Our literature search generated 10 studies (863 and 1212 mrEMVI–positive and negative patients, respectively). The two groups (mrEMVI–positive and negative) were significantly different in terms of nodal disease status (odds ratio [OR] 3.15; 95% confidence interval [CI] 2.12–4.67; p < 0.001). The prevalence of nodal disease was 75.90% vs 52.56% in the positive mrEMVI vs negative mrEMVI group, respectively ( p < 0.001). The prevalence of positive lymph node in positive mrEMVI patients treated with neoadjuvant/adjuvant chemoradiotherapy (nCRT/CRT) (OR 2.47; 95% CI 1.65–3.69; p < 0.001) was less compared with the patients who underwent surgery alone (OR 6.25; 95% CI 3.74–10.44; p < 0.001). Conclusion: The probability of positive lymph nodes in cases of positive mrEMVI is distinctly greater compared with negative cases in rectal cancer. Positive mrEMVI indicates risk of nodal disease prevalence increased by threefold in rectal cancer.

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