Publications by authors named "Yuhei Oyama"
Background And Aim: The treatment strategy for patients with ulcerative colitis (UC) in clinical remission who have not achieved mucosal healing is unclear. This study aimed to determine the risk factors of relapse in patients in clinical remission with endoscopic activity.
Methods: This retrospective, single-center study included patients with UC who underwent colonoscopy (CS) and were in clinical remission with endoscopic activity.
Background And Aim: Endoscopic retrograde cholangiopancreatography (ERCP) may help detect cholangiocarcinoma in patients with primary sclerosing cholangitis (PSC), but it may be associated with complications. This study was aimed at determining the prognostic impact of ERCP on patients with PSC without cholangitis.
Methods: Patients with PSC without cholangitis were divided into two groups: those who underwent ERCP within three years after diagnosis (ERCP-performed group) and those who did not (non-ERCP group).
Background And Aims: Delayed bleeding (DB) is a major adverse event associated with colorectal endoscopic submucosal dissection (ESD) that sometimes causes difficulties in making decisions regarding endoscopic hemostasis. This study identified the factors that contribute to follow-up without endoscopic hemostasis when DB is suspected after colorectal ESD.
Methods: In total, 583 patients (603 tumors) who underwent ESD or hybrid ESD for colorectal tumors at Chiba University Hospital between June 2009 and January 2022 were retrospectively registered.
Right-sided heart failure, including tricuspid regurgitation (TR), can cause cardiac cirrhosis. The pathophysiology is reduced arterial perfusion and passive congestion secondary to increased systemic venous pressure. However, hepatic encephalopathy due to cardiac cirrhosis is rare.
View Article and Find Full Text PDFBackground: Patients with inflammatory bowel diseases (IBD) can develop extraintestinal manifestations (EIMs) during the disease course, which sometimes impact their quality of life.
Objectives: This study aimed to clarify the prevalence and types of EIMs using a hospital-based IBD cohort in Japan.
Methods: A patient cohort with IBD was established in 2019, as participated by 15 hospitals in Chiba Prefecture of Japan.
Article Synopsis
- The early clip-with-line (ECL) method was developed to improve visualization during colorectal endoscopic submucosal dissection (ESD) by starting traction immediately after injecting sodium hyaluronate, instead of waiting until after a mucosal flap is created.
- A study compared 41 colorectal ESD cases, 27 using traditional methods and 14 using ECL, showing that ECL significantly reduced procedure time (66 minutes vs. 90 minutes) without increasing risk of perforation.
- The findings suggest that the ECL method is effective and safe, making ESD procedures faster and potentially less risky.