Shin‐ei Kudo
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View article: Clinicopathological features and prognosis of metastatic tumors in the small bowel: a large multicenter analysis of the JSCCR database in Japan
Clinicopathological features and prognosis of metastatic tumors in the small bowel: a large multicenter analysis of the JSCCR database in Japan Open
Background Owing to the rarity of metastatic tumors in the small bowel, their clinicopathological features, and prognostic factors remain poorly understood. This study aimed to clarify the clinicopathological features and factors associate…
View article: White Light, Magnifying Endoscopy, Endocytoscopy, and Artificial Intelligence in Diagnosis of Early Colorectal Cancer: A Comparative Study
White Light, Magnifying Endoscopy, Endocytoscopy, and Artificial Intelligence in Diagnosis of Early Colorectal Cancer: A Comparative Study Open
Objectives Early detection of colorectal cancer is critical for improving prognosis. However, assessing invasion depth—distinguishing between superficial cancer (T1a) and deep submucosal invasive cancer (T1b)—remains challenging. Recently,…
View article: Computer‐aided detection for esophageal achalasia (with video)
Computer‐aided detection for esophageal achalasia (with video) Open
Objectives Achalasia is an esophageal motility disorder that impairs quality of life and is often missed (20–50%) on endoscopy. A newly developed computer‐aided detection (CAD) software has shown high accuracy for achalasia diagnosis in pr…
View article: Usefulness of the Bridge Formation Method for Colorectal Endoscopic Submucosal Dissection: A Propensity Score‐Matched Study
Usefulness of the Bridge Formation Method for Colorectal Endoscopic Submucosal Dissection: A Propensity Score‐Matched Study Open
Aims Colorectal endoscopic submucosal dissection (ESD) has become a standard treatment for superficial colorectal neoplasms worldwide. However, challenges remain in achieving dissection at the precise layer. In this study, we evaluated the…
View article: The Efficacy of Texture and Color Enhancement Imaging Observation in the Detection of Colorectal Lesions: A Multicenter, Randomized Controlled Trial (deTXIon Study)
The Efficacy of Texture and Color Enhancement Imaging Observation in the Detection of Colorectal Lesions: A Multicenter, Randomized Controlled Trial (deTXIon Study) Open
This study did not demonstrate the superiority of TXI over WLI in detecting neoplastic lesions. However, TXI may be effective in detecting flat polyps. (Clinical trial registration: jRCT1032230089.).
View article: Three‐dimensional optically cleared tissue imaging for analyzing endoscopic images of gastrointestinal neoplasms (with video)
Three‐dimensional optically cleared tissue imaging for analyzing endoscopic images of gastrointestinal neoplasms (with video) Open
Objectives To develop a procedure that matches magnifying endoscopic images with narrow‐band imaging to 3D tissue structures using a tissue‐clearing technique and to qualitatively and quantitatively analyze specified structures in gastroin…
View article: Lymph node metastasis risk factors in T2 colorectal cancer
Lymph node metastasis risk factors in T2 colorectal cancer Open
Objectives This study evaluates risk factors for lymph node metastasis (LNM) in T2 colorectal cancer to refine patient selection for endoscopic resection. Methods We reviewed records from consecutive patients who had undergone curative sur…
View article: Efficacy of a whole slide image‐based prediction model for lymph node metastasis in T1 colorectal cancer: A systematic review
Efficacy of a whole slide image‐based prediction model for lymph node metastasis in T1 colorectal cancer: A systematic review Open
Background and Aim Accurate stratification of the risk of lymph node metastasis (LNM) following endoscopic resection of submucosal invasive (T1) colorectal cancer (CRC) is imperative for determining the necessity for additional surgery. In…
View article: Accuracy Goals in Predicting Preoperative Lymph Node Metastasis for T1 Colorectal Cancer Resected Endoscopically
Accuracy Goals in Predicting Preoperative Lymph Node Metastasis for T1 Colorectal Cancer Resected Endoscopically Open
Submucosal invasive (T1) colorectal cancer is a significant clinical management challenge, with an estimated 10% of patients developing extraintestinal lymph node metastasis. This condition necessitates surgical resection along with lymph …
View article: Artificial Intelligence-assisted Video Colonoscopy for Disease Monitoring of Ulcerative Colitis: A Prospective Study
Artificial Intelligence-assisted Video Colonoscopy for Disease Monitoring of Ulcerative Colitis: A Prospective Study Open
Backgrounds and Aims The Mayo endoscopic subscore [MES] is the most popular endoscopic disease activity measure of ulcerative colitis [UC]. Artificial intelligence [AI]-assisted colonoscopy is expected to reduce diagnostic variability amon…
View article: Commentary: An artificial intelligence prediction model outperforms conventional guidelines in predicting lymph node metastasis of T1 colorectal cancer
Commentary: An artificial intelligence prediction model outperforms conventional guidelines in predicting lymph node metastasis of T1 colorectal cancer Open
Commentary: An artificial intelligence prediction model outperforms conventional guidelines in predicting lymph node metastasis of T1 colorectal cancer
View article: Role of the artificial intelligence in the management of T1 colorectal cancer
Role of the artificial intelligence in the management of T1 colorectal cancer Open
Approximately 10% of submucosal invasive (T1) colorectal cancers demonstrate extraintestinal lymph node metastasis, necessitating surgical intervention with lymph node dissection. The ability to identify T1b (submucosal invasion depth ≥ 10…
View article: Outcomes of Metastatic and Unresectable Small Bowel Adenocarcinoma in Japan According to the Treatment Strategy: A Nationwide Observational Study
Outcomes of Metastatic and Unresectable Small Bowel Adenocarcinoma in Japan According to the Treatment Strategy: A Nationwide Observational Study Open
PURPOSE Limited information is available regarding the characteristics and outcomes of stage IV small bowel adenocarcinoma (SBA) in Japan. This study examined the clinical and pathological characteristics and outcomes according to the trea…
View article: Evaluating false‐positive detection in a computer‐aided detection system for colonoscopy
Evaluating false‐positive detection in a computer‐aided detection system for colonoscopy Open
Background and Aim Computer‐aided detection (CADe) systems can efficiently detect polyps during colonoscopy. However, false‐positive (FP) activation is a major limitation of CADe. We aimed to compare the rate and causes of FP using CADe be…
View article: OP16 A novel artificial intelligence-assisted Image Enhanced Endoscopy assesses accurately “vascular-healing” and predicts long-term clinical relapse in patients with ulcerative colitis: a prospective cohort study
OP16 A novel artificial intelligence-assisted Image Enhanced Endoscopy assesses accurately “vascular-healing” and predicts long-term clinical relapse in patients with ulcerative colitis: a prospective cohort study Open
Background Ulcerative colitis (UC) is a chronic specific inflammatory bowel disease that alternates between remission and relapse statuses. Microvascular finding observed in image-enhanced endoscopy (IEE) has been attracting attention to d…
View article: Differentiation grade as a risk factor for lymph node metastasis in T1 colorectal cancer
Differentiation grade as a risk factor for lymph node metastasis in T1 colorectal cancer Open
Objectives Japanese guidelines include high‐grade (poorly differentiated) tumors as a risk factor for lymph node metastasis (LNM) in T1 colorectal cancer (CRC). However, whether the grading is based on the least or most predominant compone…
View article: Challenges in Implementing Endoscopic Resection for T2 Colorectal Cancer
Challenges in Implementing Endoscopic Resection for T2 Colorectal Cancer Open
The current standard treatment for muscularis propria-invasive (T2) colorectal cancer is surgical colectomy with lymph node dissection. With the advent of new endoscopic resection techniques, such as endoscopic full-thickness resection or …
View article: Ultrahigh magnification endoscopy in inflammatory bowel disease: How do we bridge the gap between research and practice?
Ultrahigh magnification endoscopy in inflammatory bowel disease: How do we bridge the gap between research and practice? Open
Over the past 30 years, advanced endoscopic diagnostic techniques, such as magnifying and image-enhanced endoscopy (IEE), have been introduced into clinical practice.1, 2 More recently, ultrahigh magnification endoscopes have emerged with …
View article: Endoscopic resection alone as a potential treatment method for low-risk deep invasive T1 colorectal cancer
Endoscopic resection alone as a potential treatment method for low-risk deep invasive T1 colorectal cancer Open
Background and Aims: Although T1b (deep submucosal invasion) is described as an indication of surgical resection with lymph node dissection for T1 colorectal cancer (CRC) in current guidelines, it has been reported to be a weaker correlati…
View article: Optimal Timing of Laparoscopic Cholecystectomy After Conservative Therapy for Acute Cholecystitis
Optimal Timing of Laparoscopic Cholecystectomy After Conservative Therapy for Acute Cholecystitis Open
Background/Aim: According to the Tokyo Guidelines 2018, the operation for acute cholecystitis is recommended to be performed as early as possible. However, there are cases in which early surgeries cannot be performed due to complications o…
View article: Endoscopic submucosal dissection for colorectal neoplasms: Risk factors for local recurrence and long‐term surveillance
Endoscopic submucosal dissection for colorectal neoplasms: Risk factors for local recurrence and long‐term surveillance Open
Objectives Endoscopic submucosal dissection (ESD) is an effective procedure for the en bloc resection of colorectal neoplasms. However, risk factors for local recurrence after ESD have not been identified. This study aimed to evaluate such…
View article: A case of Diphyllobothrium nihonkaiense by gastrografin injection using a nasal endoscope
A case of Diphyllobothrium nihonkaiense by gastrografin injection using a nasal endoscope Open
A 76 year old female came to the outpatient clinic with a chief complaint of a string-like appearing substance in her stool. A fecalysis was done at our institution which showed the presence of eggs of Diphyllobothrium nihonkaiense. During…
View article: Diagnostic performance of endocytoscopy with normal pit‐like structure sign for colorectal low‐grade adenoma compared with conventional modalities
Diagnostic performance of endocytoscopy with normal pit‐like structure sign for colorectal low‐grade adenoma compared with conventional modalities Open
Objectives A “resect‐and‐discard” strategy has been proposed for diminutive adenomas in the colorectum. However, this strategy is sometimes difficult to implement because of the lack of confidence in differentiating low‐grade adenoma (LGA)…