Publications by authors named "Yuhei Sakata"

Background: There is no consensus on the necessity of endoscopic sphincterotomy (ES) to prevent post-endoscopic retrograde cholangiopancreatography pancreatitis (PEP) after endoscopic stenting in patients with malignant biliary obstruction. We investigated the incidence of PEP after endoscopic biliary stenting for malignant biliary obstruction with or without ES in a multicenter prospective cohort study.

Methods: We enrolled 807 patients who underwent endoscopic biliary stenting for malignant biliary obstruction with a native papilla at 36 hospitals between April 2017 and March 2018.

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Pyloric gland adenoma (PGA) in the duodenum is a rare gastric phenotype duodenal neoplasm. Although heterotopic gastric mucosa in the duodenum has been recognized as a benign lesion, it is a potential precursor of PGA and gastric phenotype adenocarcinoma. Herein, we present a case follow-up of endoscopic and histological changes in the PGA in the duodenum from low-grade to high-grade dysplasia.

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Although dexmedetomidine (DEX) is a widely used analgesic and sedative agent for endoscopic procedures, cardiovascular complications, such as bradycardia and hypotension, are frequently experienced. We herein report the first case of asystole-induced bradycardia due to DEX during endoscopic submucosal dissection (ESD). An 81-year-old man without cardiovascular diseases was referred for gastric carcinoma.

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Article Synopsis
  • * A case is presented involving a 68-year-old woman with squamous cell carcinoma who experienced gastric perforation after ESD due to gastric inflation, despite being under general anesthesia.
  • * The perforation was successfully closed endoscopically, and the patient was sent home without any complications, highlighting the need for vigilance regarding potential risks like MWT and gastric perforation during such procedures.
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Article Synopsis
  • - Plexiform neurofibroma is primarily linked to neurofibromatosis type 1, but a rare case was reported in a 35-year-old man without this condition, diagnosed via laparoscopic biopsy.
  • - The patient, initially found to have a liver tumor through routine health screening, underwent several imaging tests that revealed a tumor extending around the aorta and into multiple parts of the liver.
  • - Since the man showed no symptoms of malignancy and the tumor size decreased over a 10-year follow-up, the case highlights the importance of monitoring rather than immediate surgery for such rare occurrences.
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