Impact of sarcopenic obesity on postoperative outcomes in patients with oesophago-gastric cancer: A systematic review and meta-analysis.

Background: We elucidated the influence of sarcopenic obesity on postoperative outcomes in patients with oesophago-gastric cancer.

Methods: We conducted a systematic search on MEDLINE, the Cochrane Central Register of Controlled Trials, EMBASE, the World Health Organization International Clinical Trials Platform Search Portal, and ClinicalTrials.gov to identify observational studies published from their inception to September 26, 2024.

Impact of treatment guidelines and pivotal clinical trial results on a surgeon's decision regarding treatment for gastric cancer: a retrospective cohort study using the National Clinical Database.

Purposes: The present study evaluated the impact of clinical guidelines for gastric cancer surgery on surgeons' choice of procedure in real-world practice. We focused on the 2014 guideline revision recommending laparoscopic surgery and the evidence concerning splenectomy for prophylactic lymphadenectomy reported in 2015 using the National Clinical Database, which is the most comprehensive database in Japan.

Methods: We investigated the monthly percentages of laparoscopic distal gastrectomies performed for stage I gastric cancer (LDG%) and splenectomies performed during total gastrectomy for advanced cancer (TGS%) between 2014 and 2017.

An Elemental Diet Reduces Chylous Ascites of Patients Undergoing Pancreatoduodenectomy in the Setting of Early Enteral Feeding.

Objectives: The elemental diet (ED) is a formula to support nutritional status without increasing chylous burden. This study evaluates the efficacy of early ED feeding after pancreatoduodenectomy (PD).

Materials And Methods: A prospective phase II study of consecutive patients who underwent PD with early ED feeding was conducted.

5-year follow-up results of a JCOG1104 (OPAS-1) phase III non-inferiority trial to compare 4 courses and 8 courses of S-1 adjuvant chemotherapy for pathological stage II gastric cancer.

Background: Postoperative adjuvant chemotherapy with S-1 for 1 year (corresponding to eight courses) is the standard treatment for pathological stage II gastric cancer. The phase III trial (JCOG1104) investigating the non-inferiority of four courses of S-1 to eight courses was terminated due to futility at the first interim analysis. To confirm the primary results, we reported the results after a 5-years follow-up in JCOG1104.

Oncological impact of unexpected horizontal tumor spread in gastric cancer that requires total gastrectomy.

Background: Gastric cancer often exhibits discrepancies between the gross and pathological tumor boundaries, and the degree of discrepancy may be a tumor characteristic. However, whether these discrepancies influence oncological outcomes remains unclear.

Methods: The data of patients who underwent total gastrectomy for gastric cancer from 2005 to 2018 were collected.

Frequency of lymph node metastasis according to tumor location in clinical T1 early gastric cancer: supplementary analysis of the Japan Clinical Oncology Group study (JCOG0912).

Background: The frequency of lymph node metastases per lymph node site in early gastric cancer has not been well clarified from the data based on prospective studies. This exploratory analysis aimed to determine the frequency and location of lymph node metastases in clinical T1 gastric cancer using the data from JCOG0912 to investigate the validity of the extent of standard lymph node dissection defined in Japanese guidelines.

Methods: This analysis included 815 patients with clinical T1 gastric cancer.

Recurrence patterns after curative gastrectomy for pStage II/III gastric cancer: Exploratory analysis of the randomized controlled JCOG1001 trial.

Background: Peritoneal, lymph node, and hematogenous recurrence patterns are common after potentially curative surgery for gastric cancer. However, clinicopathological characteristics associated with each recurrence type have rarely been comprehensively reported among patients who received a unified treatment strategy and follow-up protocol. Understanding these recurrence patterns would help with early detection of recurrence and a personalized follow-up plan.

A retrospective 5-year survival analysis of surgically resected gastric cancer cases from the Japanese Gastric Cancer Association nationwide registry (2001-2013).

Background: The nationwide registry of the Japanese Gastric Cancer Association collected data of surgically resected cases of gastric cancer between 2001 and 2013. These retrospective analyses aimed to delineate tumor characteristics, surgical history, and survival distribution.

Methods: Data from 254,706 patients with primary gastric cancer were included.

Evaluation of postgastrectomy symptoms and daily lives of small remnant distal gastrectomy for upper-third gastric cancer using a large-scale questionnaire survey.

Aim: Total gastrectomy (TG) is often performed for proximal gastric cancer. Small remnant distal gastrectomy (SRDG) can also be used in cases where surgical margins can be secured. The impact of preserving proximal small remnant stomach on postoperative quality of life (QOL) has not been fully elucidated.

Minimum resection length to ensure a pathologically negative distal margin and the preservation of a larger remnant stomach in proximal gastrectomy for early upper gastric cancer.

Background: In proximal gastrectomy (PG), a longer distal margin (DM) length should be maintained to obtain a pathologically negative DM. However, a shorter DM length is preferred to preserve a large remnant stomach for favorable postoperative outcomes. Evidence regarding the minimum DM length to ensure a pathologically negative DM is useful.

A randomized controlled trial of surgery and postoperative modified FOLFOX6 versus surgery and perioperative modified FOLFOX6 plus cetuximab in patients with KRAS wild-type resectable colorectal liver metastases: EXPERT study.

Purpose: To clarify the efficacy of perioperative chemotherapy for the patients with resectable colorectal liver metastases (CLM), we conducted a multicenter randomized phase III trial to compare surgery followed by postoperative FOLFOX regimen with perioperative FOLFOX regimen plus cetuximab in patients with KRAS wild-type resectable CLM.

Methods: Patients who had KRAS wild-type resectable CLM having one to eight liver nodules without extrahepatic disease were randomly assigned to the postoperative chemotherapy group, wherein up-front hepatectomy was performed followed by 12 cycles of postoperative modified FOLFOX6, and the perioperative chemotherapy group (experimental), wherein six cycles of preoperative modified FOLFOX6 plus cetuximab were performed followed by hepatectomy and six cycles of postoperative modified FOLFOX6 plus cetuximab. The primary endpoint was progression-free survival (PFS).

Surgically treated gastric cancer in Japan: 2011 annual report of the national clinical database gastric cancer registry.

Background: The National Clinical Database (NCD) nationwide registry program of gastric cancer started in 2018. The purpose of this study was to report the treatment results of the NCD registry in the form of treatment results of the real world in Japan.

Methods: Patients' characteristics, tumor features, treatments, and outcomes were collected using a web-based data entry system.

Diagnostic yield of conventional endoscopy with endoscopic ultrasonography for submucosal invasion of superficial esophageal squamous cell carcinoma: a post hoc analysis of multicenter prospective confirmatory study (JCOG0508).

Background: Endoscopic ultrasonography (EUS) is reportedly the reliable modality to predict the depth of esophageal squamous cell carcinoma (ESCC), however, most previous studies are retrospective or single-centered. We aimed to evaluate the diagnostic ability of conventional endoscopy and EUS using the data from a multicenter prospective study of endoscopic resection (ER) followed by chemoradiotherapy for cSM1-2N0M0 ESCC (JCOG0508).

Methods: All lesions were evaluated as cSM cancer with both conventional endoscopy and EUS before enrollment and judged as cSM1 or cSM2 in real time.

Limited resection vs. pancreaticoduodenectomy for primary duodenal adenocarcinoma: a systematic review and meta-analysis.

It is well known that surgery is the mainstay treatment for duodenal adenocarcinoma. However, the optimal extent of surgery is still under debate. We aimed to systematically review and perform a meta-analysis of limited resection (LR) and pancreatoduodenectomy for patients with duodenal adenocarcinoma.

Safety and feasibility of laparoscopic and endoscopic cooperative surgery for duodenal neoplasm: a retrospective multicenter study.

Background: A delayed perforation can often occur after endoscopic treatment for duodenal neoplasms and may be fatal due to leakage of pancreatic and bile juices. We aimed to evaluate the feasibility and safety of laparoscopic and endoscopic cooperative surgery for duodenal neoplasms (D-LECS) in a multicenter, retrospective study.

Methods: The clinical characteristics and surgical outcomes of 206 patients with duodenal neoplasms in whom D-LECS had initially been attempted at one of 14 institutions were reviewed retrospectively.

Current status of proximal gastrectomy for gastric and esophagogastric junctional cancer: A review.

Proximal gastrectomy (PG) is one of the function-preserving surgical methods for the treatment of upper gastric cancer. Favorable postoperative results have been reported in comparison with total gastrectomy. However, because there are challenges, such as postoperative reflux esophagitis, anastomotic stenosis, and residual food, appropriate selection of a reconstruction method is crucial.

Optimal extent of lymph node dissection for remnant advanced gastric carcinoma after distal gastrectomy: a retrospective analysis of more than 3000 patients from the nationwide registry of the Japanese Gastric Cancer Association.

Background: No guidelines are available for defining the extent of lymph node (LN) dissection in patients with remnant gastric carcinoma (RGC). Hence, this retrospective study aimed to determine the optimal extent of LN dissection in patients with RGC.

Methods: We retrospectively evaluated the therapeutic outcomes of node dissection for RGC from a nationwide registry.

Genetic and epigenetic analyses of panic disorder in the post-GWAS era.

Panic disorder (PD) is a common and debilitating neuropsychiatric disorder characterized by panic attacks coupled with excessive anxiety. Both genetic factors and environmental factors play an important role in PD pathogenesis and response to treatment. However, PD is clinically heterogeneous and genetically complex, and the exact genetic or environmental causes of this disorder remain unclear.

Determinant Factors on Differences in Survival for Gastric Cancer Between the United States and Japan Using Nationwide Databases.

Background: Although the incidence and mortality have decreased, gastric cancer (GC) is still a public health issue globally. An international study reported higher survival in Korea and Japan than other countries, including the United States. We examined the determinant factors of the high survival in Japan compared with the United States.

Predictors of invasive cancer of large laterally spreading colorectal tumors: A multicenter study in Japan.

Background And Aim: Although colorectal laterally spreading tumors (LSTs) can be classified into four subtypes, the histopathological characteristics are known to differ among these subtypes. We therefore performed a logistic regression analysis to determine whether the risk of pathological T1 cancer of large colorectal LSTs can be predicted based on factors such as endoscopic findings in a large group of patients enrolled in a multicenter study in Japan.

Methods: In the main study, we assessed 1236 colorectal adenomas or early cancers that were classified as LSTs measuring 20 mm or more in diameter and treated endoscopically.

Repeat Hepatectomy for Early Recurrence of Colorectal Liver Metastases-Prognostic Impacts Assessed from the Recurrence Pattern.

Background: It is unclear how early liver recurrence negatively affects survival in patients undergoing surgery for colorectal liver metastases (CLM) and whether to perform re-hepatectomy for early recurrence is still controversial. We aimed to evaluate the prognostic value of re-hepatectomy for early recurrence of CLM.

Methods: We reviewed 634 patients undergoing initial hepatectomy for CLM between 2004 and 2015.

Surgical outcomes of elderly patients with Stage I gastric cancer from the nationwide registry of the Japanese Gastric Cancer Association.

Background: The proportion of elderly patients undergoing surgery for gastric cancer is increasing. However, limited number of therapeutic outcomes in the elderly has been reported. Here we examined the surgical results based on a nationwide survey of elderly patients who underwent surgery for Stage I gastric cancer.

Left-sided Portal Hypertension After Pancreaticoduodenectomy With Resection of the Portal Vein/Superior Mesenteric Vein Confluence in Patients With Pancreatic Cancer: A Project Study by the Japanese Society of Hepato-Biliary-Pancreatic Surgery.

Objective: The aim of this study was to evaluate how often left-sided portal hypertension (LPH) develops and how LPH affects the long-term outcomes of patients with pancreatic cancer treated with pancreaticoduodenectomy (PD) and resection of the portal vein (PV)/superior mesenteric vein (SMV) confluence.

Summary Background Data: Little is known about LPH after PD with resection of the PV/SMV confluence.

Methods: Overall, 536 patients who underwent PD with PV/SMV resection were enrolled.