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Article
Endoscopic management of familial adenomatous polyposis targeting colorectal lesions greater than 5 mm in size: a single-center retrospective study
Preserving the colon while preventing colorectal cancer is challenging in patients with familial adenomatous polyposis. Although prophylactic colectomy is the current standard of care, some patients with famil...
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Article
Open AccessGastric epithelial neoplasm of fundic-gland mucosa lineage: proposal for a new classification in association with gastric adenocarcinoma of fundic-gland type
Gastric adenocarcinoma of fundic-gland type (GA-FG) is a rare variant of gastric neoplasia. However, the etiology, classification, and clinicopathological features of gastric epithelial neoplasm of fundic-glan...
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Article
Prophylactic steroid administration against strictures is not enough for mucosal defects involving the entire circumference of the esophageal lumen after esophageal endoscopic submucosal dissection (ESD)
The width of mucosal defects after endoscopic submucosal dissection (ESD) of esophageal squamous cell carcinoma (ESCC) is known to be a risk factor for esophageal strictures. Although steroid injection and ora...
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Article
Therapeutic results of proton beam therapy with concurrent chemotherapy for cT1 esophageal cancer and salvage endoscopic therapy for local recurrence
Proton beam therapy (PBT) with concurrent chemotherapy is promising for esophageal squamous cell carcinoma (ESCC). The aim of study was to evaluate the outcome of concurrent chemo-proton therapy (CCPT), i.e., ...
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Article
Advantages of salvage photodynamic therapy using talaporfin sodium for local failure after chemoradiotherapy or radiotherapy for esophageal cancer
Photodynamic therapy (PDT) is a salvage treatment for local failure following chemoradiotherapy (CRT) for esophageal cancer. This study aimed to evaluate the efficacy and safety of salvage PDT using the second...
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Article
Open AccessSafety of endoscopic procedures with monopolar versus bipolar instruments in an ex vivo porcine model
Monopolar instruments are generally used in colorectal endoscopic mucosal resection (EMR). Bipolar instruments have previously been reported to be as safe as monopolar instruments. We sought to compare the saf...
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Article
Endoscopic submucosal resection using a ligation device without injection for duodenal neuroendocrine tumors
Duodenal neuroendocrine tumors (NETs) measuring ≤ 10 mm in diameter that are confined to the submucosal layer without metastasis are suitable for endoscopic treatment. We previously reported the efficacy and s...
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Article
Human epidermal growth factor receptor 2-, epidermal growth factor receptor-, and mesenchymal epithelial transition factor-positive sites of gastric cancer using surgical samples
Receptor tyrosine kinases (RTKs) play critical roles in gastric cancer (GC) progression and are potential targets for novel molecular-targeted agents or photo-immunotherapies. During patient selection, targete...
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Article
Clinicopathological features and endoscopic findings of HER2-positive gastric cancer
Human epidermal growth factor receptor 2 (HER2) expression in gastric cancer is highly heterogeneous. Therefore, it is important to take endoscopic samples from appropriate tumor sites.
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Article
Pilot study on probe-based confocal laser endomicroscopy for colorectal neoplasms: an initial experience in Japan
The aim of this pilot study is to investigate the diagnostic yield of probe-based confocal laser endomicroscopy (pCLE) in the evaluation of depth of invasion in colorectal lesions.
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Article
A case of a protruded lesion formed by a poorly differentiated intramucosal adenocarcinoma of the stomach: an immunohistochemical analysis
A 70-year-old woman underwent upper gastrointestinal endoscopy and was found to have a 25-mm protruded lesion in the gastric body. A biopsy revealed malignant cells. Endoscopic submucosal dissection was perfor...
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Article
Endoscopic submucosal resection with a ligation device for the treatment of duodenal neuroendocrine tumors
Endoscopic submucosal resection with a ligation device (ESMR-L) is effective for rectal neuroendocrine tumors (NETs); however, its effectiveness for duodenal NETs is unclear. This study evaluated the efficacy ...
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Article
Peritonitis related to percutaneous endoscopic gastrostomy using the direct method for cancer patients
Percutaneous endoscopic gastrostomy (PEG) using the direct method is generally indicated for cancer patients. However, there are little available data about peritonitis related to this method. The aim of this...
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Article
Usefulness of narrow-band imaging with dual-focus magnification for differential diagnosis of small colorectal polyps
Many authors have already reported the usefulness of narrow-band imaging (NBI) for the differential diagnosis of non-neoplastic and neoplastic colorectal lesions. However, it is not clear whether magnification...
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Article
Clinicopathological differences of laterally spreading tumors arising in the colon and rectum
Laterally spreading tumors (LST) have been recognized worldwide. The aim of our retrospective study was to evaluate the clinicopathological differences of LST arising in the colon and rectum.
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Article
Open AccessMorphological change of a laterally spreading rectal tumor over a short period
Laterally spreading tumors (LSTs) are generally defined as superficial lesions ≥10 mm in diameter that typically extend laterally rather than vertically along the colonic wall. LSTs are usually categorized int...
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Article
Endoscopic balloon dilatation for benign fibrotic strictures after curative nonsurgical treatment for esophageal cancer
Endoscopic balloon dilatation (EBD) is performed to treat strictures after esophagectomy. However, little is known about using EBD for benign strictures that occur after nonsurgical treatments for esophageal c...
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Article
Evaluation of complications related to therapeutic colonoscopy using the bipolar snare
The complications with therapeutic colonoscopy reported to date have been associated with the monopolar snare, and the frequency of complications related to use of the bipolar snare is uncertain. This study ai...
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Article
Progression of a Sessile Serrated Adenoma to an Early Invasive Cancer Within 8 Months
Recent studies suggest that serrated polyps, including hyperplastic polyps, traditional serrated adenomas, and sessile serrated adenomas, may be morphologically and genetically distinct and linked to microsate...
