OOIR: Observatory of International Research

Papers

(The TQCC of Annals of Gastroenterological Surgery is 5. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)

Article	Citations
Surgical outcomes in gastroenterological surgery in Japan: Report of the National Clinical Database 2011–2019	85
International Retrospective Cohort Study of Conversion Therapy for Stage IV Gastric Cancer 1 (CONVO‐GC‐1)	56
Robotic surgery for colorectal cancer	44
Artificial intelligence‐based computer vision in surgery: Recent advances and future perspectives	44
Challenges in improving the minimal invasiveness of the surgical treatment for gastric cancer using robotic technology	37
Impact of Reconstruction Route on Postoperative Morbidity After Esophagectomy: Analysis of Esophagectomies in the Japanese National Clinical Database	33
History and emerging trends in chemotherapy for gastric cancer	30
Annual report on National Clinical Database 2020 for gastroenterological surgery in Japan	29
Osteosarcopenia is a potential predictor for the prognosis of patients who underwent hepatic resection for colorectal liver metastases	25
Recent advances in precision medicine for pancreatic ductal adenocarcinoma	22
Essential updates 2019/2020: Perioperative and surgical management of gastric cancer	22
The advanced lung cancer inflammation index is a novel independent prognosticator in colorectal cancer patients after curative resection	19
Long‐term results of a randomized controlled trial comparing neoadjuvant Adriamycin, cisplatin, and 5‐fluorouracil vs docetaxel, cisplatin, and 5‐fluorouracil followed by surgery for esophageal cancer	17
Is proximal gastrectomy indicated for locally advanced cancer in the upper third of the stomach?	17
Research Progress on the Relationship Between Inflammation and Colorectal Cancer	17
Current status of function‐preserving gastrectomy for gastric cancer	17
Effects of the COVID‐19 pandemic on gastroenterological surgeries in 2020: A study using the National Clinical Database of Japan	16
The new prognostic score for unresectable or recurrent gastric cancer treated with nivolumab: A multi‐institutional cohort study	16
The changing surgical scene: From the days of Billroth to the upcoming future of artificial intelligence and telerobotic surgery	16
Clinical effects of the use of the indocyanine green fluorescence imaging technique in laparoscopic partial liver resection	15
Recent developments in cancer research: Expectations for a new remedy	15
Tumor deposits in colorectal cancer: Refining their definition in the TNM system	15
Current state of pancreas transplantation in Japan based on the nationwide registry	14
Clinical TNM staging for esophageal, gastric, and colorectal cancers in the era of neoadjuvant therapy: A systematic review of the literature	14
Sustainable Clinical Development of Adjuvant Chemotherapy for Colon Cancer	14

Modified side overlap esophagogastrostomy after laparoscopic proximal gastrectomy	14
Current status of perioperative nutritional intervention and exercise in gastric cancer surgery: A review	14
Radiogenomics of gastroenterological cancer: The dawn of personalized medicine with artificial intelligence‐based image analysis	13
Laparoscopic Surgery for Acute Diffuse Peritonitis Due to Gastrointestinal Perforation: A Nationwide Epidemiologic Study Using the National Clinical Database	12
The 140 years' journey of gastric cancer surgery: From the two hands of Billroth to the multiple hands of the robot	12
Impact of abdominal aortic calcification on clinical outcomes following initial hepatectomy for hepatocellular carcinoma: A retrospective cohort study	12
Roles of the nervous system in pancreatic cancer	12
Identification of patient subgroups with unfavorable long‐term outcomes associated with laparoscopic surgery in a randomized controlled trial comparing open and laparoscopic surgery for colon cancer (	12
Validation of data quality in a nationwide gastroenterological surgical database: The National Clinical Database site‐visit and remote audits, 2016‐2018	12
Phase 2 trial of neoadjuvant docetaxel, oxaliplatin, and S‐1 for clinical stage III gastric or esophagogastric junction adenocarcinoma	12
Impact of preoperative muscle quality on postoperative severe complications after radical gastrectomy for gastric cancer patients	12
Risk of emergency surgery for complicated appendicitis: Japanese nationwide study	12
Evaluation of postgastrectomy symptoms and daily lives of small remnant distal gastrectomy for upper‐third gastric cancer using a large‐scale questionnaire survey	11
From “East vs West” towards international multidisciplinary collaboration: An appraisal of lateral lymph nodes in rectal cancer	11
The Effectiveness of Machine Learning in Predicting Lateral Lymph Node Metastasis From Lower Rectal Cancer: A Single Center Development and Validation Study	11
A nationwide, multi‐institutional collaborative retrospective study of colorectal neuroendocrine tumors in Japan	11
Effects of an oral elemental nutritional supplement in gastric cancer patients with adjuvant S‐1 chemotherapy after gastrectomy: A multicenter, open‐label, single‐arm, prospective phase II study (OGSG	11
Pharmacological treatment to reduce pulmonary morbidity after esophagectomy	10
The impact of C‐reactive protein‐albumin‐lymphocyte (CALLY) index on the prognosis of patients with distal cholangiocarcinoma following pancreaticoduodenectomy	10
Frailty and surgical outcomes in gastrointestinal cancer: Integration of geriatric assessment and prehabilitation into surgical practice for vulnerable patients	10
Which is better to use “body weight” or “standard liver weight”, for predicting small‐for‐size graft syndrome after living donor liver transplantation?	10
Which is the best predictor of clinically relevant pancreatic fistula after pancreatectomy: drain fluid concentration or total amount of amylase?	10
Essential updates 2021/2022: Perioperative and surgical treatments for gastric and esophagogastric junction cancer	10
Preoperative skeletal muscle status is associated with tumor‐infiltrating lymphocytes and prognosis in patients with colorectal cancer	10
Preoperative transferrin level is a novel prognostic marker for colorectal cancer	10
Impact of preoperative skeletal muscle mass and physical performance on short‐term and long‐term postoperative outcomes in patients with esophageal cancer after esophagectomy	10
Do postoperative infectious complications really affect long‐term survival in colorectal cancer surgery? A multicenter retrospective cohort study	9
Essential updates 2021/2022: Surgical outcomes of oligometastasis in pancreatic ductal adenocarcinoma	9
Prognostic factors in conversion surgery following nab‐paclitaxel with gemcitabine and subsequent chemoradiotherapy for unresectable locally advanced pancreatic cancer: Results of a dual‐center study	9
Significant impact of cachexia index on the outcomes after hepatic resection for colorectal liver metastases	9
What is the best reconstruction procedure after esophagectomy? A meta‐analysis comparing posterior mediastinal and retrosternal approaches	9
Intraoperative visualization of morphological patterns of the thoracic duct by subcutaneous inguinal injection of indocyanine green in esophagectomy for esophageal cancer	9
Essential updates 2020/2021: Advancing precision medicine for comprehensive rectal cancer treatment	9
Robotic‐assisted colectomy for right‐sided colon cancer: Short‐term surgical outcomes of a multi‐institutional prospective cohort study in Japan	9
Robotic pancreaticoduodenectomy for pancreatic head cancer and periampullary lesions	9
Impact of the COVID‐19 pandemic on colorectal cancer surgery in Japan: Clinical Study Group of Osaka University―A multicenter retrospective study	9
Prognostic significance of osteopenia in patients with colorectal cancer: A retrospective cohort study	9
Treatment of intrahepatic recurrence after hepatectomy for hepatocellular carcinoma	9
Differential diagnoses of gallbladder tumors using CT‐based deep learning	8
Alteration of prognostic efficacy of albumin‐bilirubin grade and Child‐Pugh score according to liver fibrosis in hepatocellular carcinoma patients with Child‐Pugh A following hepatectomy	8
Laparoscopic living‐donor hepatectomy: Review of its current status	8
Laparoscopic versus open resection for stage II/III rectal cancer in obese patients: A multicenter propensity score‐based analysis of short‐ and long‐term outcomes	8
Surgery after sunitinib administration to improve survival of patients with advanced pancreatic neuroendocrine neoplasms	8
Oncological benefits of portal vein embolization for patients with hepatocellular carcinoma	8
Overall survival after recurrence in stage I–III colorectal cancer patients in accordance with the recurrence organ site and pattern	8
The impact of COVID‐19 for postoperative outcomes using a nationwide Japanese database of patients undergoing distal gastrectomy for gastric cancer	8
Risk factors for incisional hernia according to different wound sites after open hepatectomy using combinations of vertical and horizontal incisions: A multicenter cohort study	8
Precision surgery for colorectal liver metastases: Current knowledge and future perspectives	8
Defining conversion therapy for esophageal squamous cell carcinoma	8
Is splenic hilar lymph node dissection necessary for proximal gastric cancer surgery?	8

Grip strength as a predictor of postoperative delirium in patients with colorectal cancers	8
Essential updates 2020/2021: Recent topics in surgery and perioperative therapy for esophageal cancer	8
Essential updates 2019/2020: Surgical treatment of gallbladder cancer	8
Comparison between robotic‐assisted and laparoscopic sphincter‐preserving operations for ultra‐low rectal cancer	8
Reappraisal of telesurgery in the era of high‐speed, high‐bandwidth, secure communications: Evaluation of surgical performance in local and remote environments	8
Clinical impact of the triple‐layered circular stapler for reducing the anastomotic leakage in rectal cancer surgery: Porcine model and multicenter retrospective cohort analysis	8
Adapted systemic inflammation score as a novel prognostic marker for esophageal squamous cell carcinoma patients	8
Essential updates 2020/2021: Current topics of simulation and navigation in hepatectomy	8
Difference between carbohydrate antigen 19‐9 and fluorine‐18 fluorodeoxyglucose positron emission tomography in evaluating the treatment efficacy of neoadjuvant treatment in patients with resectable a	8
Salvage treatment after definitive chemoradiotherapy for esophageal squamous cell carcinoma	8
Evaluating staging laparoscopy indications for pancreatic cancer based on resectability classification and treatment strategies for patients with positive peritoneal washing cytology	8
Current progress in perioperative chemotherapy for biliary tract cancer	8
Levels of tumor markers CEA/CA 19–9 in serum and peritoneal lavage predict postoperative recurrence in patients with pancreatic cancer	8
Impact of postoperative complications after primary tumor resection on survival in patients with incurable stage IV colorectal cancer: A multicenter retrospective cohort study	7
Safety, efficacy, and operability of a newly developed absorbable adhesion barrier (GM142) in patients with primary rectal cancer scheduled for diverting ileostomy during laparoscopic surgery: Randomi	7
Preoperative neutrophil‐to‐lymphocyte ratio predicts healing time for postoperative pancreatic fistula after distal pancreatectomy	7
Application and utility of surgical techniques for cystic plate isolation in liver surgery	7
Evaluation of clinical outcomes with propensity‐score matching for colorectal cancer presenting as an oncologic emergency	7
Role of surgical resection and its alternative local therapy for pulmonary metastasis of colorectal cancer	7
Prognostic Value of Carbohydrate Antigen 19‐9 and the Surgical Margin in Extrahepatic Cholangiocarcinoma	7
Changes in patient background and prognosis after hepatectomy for hepatocellular carcinoma by hepatitis virus infection status: New trends in Japan	7
Similarities and differences between study designs in short‐ and long‐term outcomes of laparoscopic versus open low anterior resection for rectal cancer: A systematic review and meta‐analysis of rando	7
Advantageous factors of R0 curative conversion esophagectomy and the optimal extent of lymphadenectomy after induction therapy for cT4b thoracic esophageal cancer	7
Clinical significance of sarcopenic dysphagia for patients with esophageal cancer undergoing esophagectomy: A review	7
Effects of creating a jejunal pouch on postoperative quality of life after total gastrectomy: A cross‐sectional study	7
Risk factors for postoperative delirium in elderly patients undergoing gastroenterological surgery: A single‐center retrospective study	7
Tumor budding may be a promising prognostic indicator in intrahepatic cholangiocarcinoma: A multicenter retrospective study	7
Current status of IBD and surgery of Crohn's disease in Thailand	7
Institutional variation in survival and morbidity in laparoscopic surgery for colon cancer: From the data of a randomized controlled trial comparing open and laparoscopic surgery (JCOG0404)	7
Emerging evidence of immunotherapy for colorectal cancer	7
Current status of preoperative risk assessment for posthepatectomy liver failure in patients with hepatocellular carcinoma	6
Survey Regarding Gastrointestinal Stoma Construction and Closure in Japan	6
Current progress in robotic hepatobiliary and pancreatic surgery at a high‐volume center	6
The current status and future directions of robotic pancreatectomy	6
Precision medicine for adjuvant chemotherapy of resected colorectal cancer	6
Clinical significance of postpancreatectomy acute pancreatitis defined by the International Study Group for Pancreatic Surgery	6
Survival impact of surgical site infection in esophageal cancer surgery: A multicenter retrospective cohort study	6
Prevalence and safety of robotic surgery for gastrointestinal malignant tumors in Japan	6
Investigation of the influence of pancreatic surgery on new‐onset and persistent diabetes mellitus	6
Risk factors and long‐term postoperative outcomes in patients with postoperative dysphagia after esophagectomy for esophageal cancer	6
Biomarkers in colorectal liver metastases: Rising complexity and unknown clinical significance?	6
Micrometastasis in lymph nodes of colorectal cancer	6
Significant positive impact of duodenum‐preserving pancreatic head resection on the prevention of postoperative nonalcoholic fatty liver disease and acute cholangitis	6
Differences in prognosis and underuse of adjuvant chemotherapy between elderly and non‐elderly patients in stage III colorectal cancer	6
The impact of DNA testing on management of patients with colorectal cancer	5
Significance of osteopenia in elderly patients undergoing emergency gastrointestinal surgery	5
Risk factors for non‐gastric‐cancer‐related death after gastrectomy in elderly patients	5
Essential updates 2019/2020: Multimodal treatment of localized pancreatic adenocarcinoma: Current topics and updates in survival outcomes and prognostic factors	5
Clinical outcomes of neoadjuvant chemotherapy for resectable colorectal liver metastasis with intermediate risk of postoperative recurrence: A multi‐institutional retrospective study	5
Prognostic impact of thoracic duct lymph node metastasis in esophageal squamous cell carcinoma	5
Prognostic impact of preoperative skeletal muscle change from diagnosis to surgery in patients with perihilar cholangiocarcinoma	5
Clinical implications of lymphadenectomy for invasive ductal carcinoma of the body or tail of the pancreas	5
Patient backgrounds and short‐term outcomes of complicated appendicitis differ from those of uncomplicated appendicitis	5
Association of day of the week with mortality after elective right hemicolectomy for colon cancer: Case analysis from the National Clinical Database	5
Current clinical practice for familial adenomatous polyposis in Japan: A nationwide multicenter study	5
Quality of life comparison between esophagogastrostomy and double tract reconstruction for proximal gastrectomy assessed by Postgastrectomy Syndrome Assessment Scale (PGSAS)‐45	5
Germline DNA damage repair gene mutations in pancreatic cancer patients with personal/family histories of pancreas/breast/ovarian/prostate cancer in a Japanese population	5
The comprehensive review of gastric adenocarcinoma and proximal polyposis of the stomach (GAPPS) from diagnosis and treatment	5
Antimesenteric cutback end‐to‐end isoperistaltic anastomosis (Sasaki‐Watanabe anastomosis) for Crohn's disease: Novel surgical technique and early results of surgical anastomotic recurrence	5
Impact of the KIT/PDGFRA genotype on prognosis in imatinib‐naïve Japanese patients with gastrointestinal stromal tumor	5
Germline Variants in DNA Damage Repair Genes: An Emerging Role in the Era of Precision Medicine in Pancreatic Adenocarcinoma	5
Essential updates 2021/2022: Update in surgical strategy for perihilar cholangiocarcinoma	5
Prognostic significance of preoperative osteopenia on outcomes after gastrectomy for gastric cancer	5
Usefulness of the cachexia index as a prognostic indicator for patients with gastric cancer	5
The impact of pancreas compression time during minimally invasive gastrectomy on the postoperative complications in gastric cancer	5
Usefulness of frailty to predict short‐ and long‐term outcomes in patients who have undergone major hepatectomy for perihilar cholangiocarcinoma	5
Japanese multicenter prospective study investigating laparoscopic surgery for locally advanced rectal cancer with evaluation of CRM and TME quality (PRODUCT trial)	5