Publications by authors named "Hirokazu Saito"

Article Synopsis
  • EUS-guided biliary drainage (EUS-BD) has shown good results in high-volume centers, but this study investigates its safety and effectiveness in newer centers that recently adopted the procedure.
  • The research involved 22 centers from 2017 to 2022, assessing 255 patients and looking at the success and complications of EUS-BD performed by 84 endoscopists.
  • The study found a high technical success rate of 91.4% but identified specific risks for failure and complications, including smaller puncture target diameters and moderate ascites, highlighting that the experience level of endoscopists did not significantly affect outcomes.
View Article and Find Full Text PDF

Background/aims: This study aimed to examine the synergistic effect of independent risk factors on post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP).

Methods: This multicenter retrospective study included 1,273 patients with native papillae who underwent ERCP for bile duct stones in Japan. Independent PEP risk factors were identified using univariate and multivariate analyses.

View Article and Find Full Text PDF

Sublingual immunotherapy (SLIT) is an effective and popular treatment for cedar pollinosis. Although SLIT can cause allergic side effects, eosinophilic esophagitis (EoE) is a lesser-known side effect of SLIT. A 26-year-old male with cedar pollinosis, wheat-dependent exercise-induced anaphylaxis, and food allergies to bananas and avocados presented with persistent throat itching, difficulty swallowing, heartburn, and anterior chest pain 8 days after starting SLIT for cedar pollinosis.

View Article and Find Full Text PDF

Introduction: Evidence for the outcomes of endoscopic retrograde cholangiopancreatography (ERCP) between a basket catheter and a balloon catheter for endoscopic common bile duct stone (CBDS) removal is lacking. This study aimed to compare ERCP outcomes using a basket catheter and a balloon catheter for endoscopic CBDS removal.

Methods: This multicenter retrospective study included 904 consecutive patients with native papilla who underwent endoscopic stone removal for CBDS ≤10 mm using a basket catheter and/or a balloon catheter at three institutions in Japan.

View Article and Find Full Text PDF

Introduction: Endoscopic retrograde cholangiopancreatography (ERCP) for asymptomatic common bile duct stones (CBDS) has been associated with an increased risk of post-ERCP pancreatitis (PEP). Patients with asymptomatic CBDS at the time of ERCP include those with incidentally discovered CBDS (group A) and previously symptomatic patients with CBDS who became asymptomatic after conservative treatment for symptomatic CBDS, including obstructive jaundice or acute cholangitis (group B). In this study, we aimed to examine PEP risk in group B by comparing PEP risks between groups A, B, and currently symptomatic patients (group C).

View Article and Find Full Text PDF

Background: Unnecessary endoscopic retrograde cholangiopancreatography (ERCP) after spontaneous passage of common bile duct stones (CBDSs) should be avoided. This study aimed to examine the cumulative diagnosis rate and the predictive factors of spontaneous CBDS passage during the interval between the imaging diagnosis and ERCP.

Methods: This multicenter retrospective study included 1260 consecutive patients with native papilla diagnosed with CBDSs using imaging modalities.

View Article and Find Full Text PDF

Background: The revised American Society for Gastrointestinal Endoscopy (ASGE) guideline 2019 provides the high-risk criteria for suspected common bile duct stones (CBDSs).

Aims: To evaluate CBDS detection rates during endoscopic retrograde cholangiopancreatography (ERCP) in high-risk patients with suspected CBDSs based on the ASGE guideline 2019.

Methods: This multicenter retrospective study included 1100 consecutive patients who underwent ERCP for suspected CBDSs with any high-risk criteria based on the revised ASGE guideline 2019: Criterion 1, CBDSs on imaging; Criterion 2, clinical ascending cholangitis; and Criterion 3, total bilirubin exceeding 4 mg/dL and dilated common bile duct on imaging.

View Article and Find Full Text PDF

Prophylaxis is important for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP), which is the most common and serious complication of ERCP. Although the current guidelines include independent patient- and procedure-related risk factors for PEP and available PEP prophylactic measures, the synergistic effect of these risk factors on PEP should also be considered, given that patients often harbor multiple risk factors. Furthermore, a combination of prophylactic measures is often selected in clinical practice.

View Article and Find Full Text PDF

Stones in the common bile duct (CBD) are reported worldwide, and this condition is majorly managed through endoscopic retrograde cholangiopancreatography (ERCP). CBD stone recurrence is an important issue after endoscopic stone removal. Therefore, it is essential to identify its risk factors to determine the necessity of regular follow-up in patients who underwent endoscopic removal of CBD stones.

View Article and Find Full Text PDF

Background: Pathological close margins are considered a significant factor for local recurrence in patients with oral cancer. However, the oral cavity has complicated anatomical features, and the appropriate margin distance for each site is unknown. This multicenter, retrospective study aimed to determine the appropriate resection margin for early tongue cancer and investigate the need for additional treatment for close margins and stump dysplasia.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the safety and effectiveness of endoscopic retrograde cholangiopancreatography (ERCP) in older patients with a poor performance status (PS 3 or 4) who have common bile duct stones (CBDS).
  • Data was collected from 1343 patients across three Japanese institutions, with a focus on comparing those with a PS of 0-2 to those with a PS of 3-4 to assess complication rates and therapeutic success.
  • Results showed that while ERCP is generally effective for patients with a PS of 3-4, with similar success rates to those with better PS scores, the complication rates were higher in the poorer PS group, highlighting the need for careful consideration before proceeding with
View Article and Find Full Text PDF

Background And Aim: Current guidelines recommend the removal of common bile duct (CBD) stones by endoscopic retrograde cholangiopancreatography (ERCP) for both asymptomatic and symptomatic patients. We conducted this study because of the limited research comparing the risks of ERCP-related complications between these two groups.

Methods: This retrospective study involved 1491 patients with native major duodenal papilla diagnosed with choledocholithiasis at three institutions in Japan.

View Article and Find Full Text PDF

Background/aims: Difficult biliary cannulation is an important risk factor for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). Therefore, this study aimed to identify the factors that predict difficult cannulation for common bile duct stones (CBDS) to reduce the risk for PEP.

Methods: This multicenter retrospective study included 1,406 consecutive patients with native papillae who underwent ERCP for CBDS.

View Article and Find Full Text PDF

Background And Aim: Choledocholithiasis is the most common indication for endoscopic retrograde cholangiopancreatography (ERCP). Identifying risk factors for post-ERCP pancreatitis (PEP) is important for reducing the risk of developing PEP after common bile duct (CBD) stone removal. However, studies examining the risk factors for PEP for CBD stones are scarce.

View Article and Find Full Text PDF

Current guidelines for treating asymptomatic common bile duct stones (CBDS) recommend stone removal, with endoscopic retrograde cholangiopancreatography (ERCP) being the first treatment choice. When deciding on ERCP treatment for asymptomatic CBDS, the risk of ERCP-related complications and outcome of natural history of asymptomatic CBDS should be compared. The incidence rate of ERCP-related complications, particularly of post-ERCP pancreatitis for asymptomatic CBDS, was reportedly higher than that of symptomatic CBDS, increasing the risk of ERCP-related complications for asymptomatic CBDS compared with that previously reported for biliopancreatic diseases.

View Article and Find Full Text PDF

Objective Endoscopic papillary large-balloon dilation (EPLBD) with limited endoscopic sphincterotomy (EST) is widely used for removing multiple large common bile duct (CBD) stones. However, the safety and effectiveness of immediate EPLBD after limited EST and EPLBD at an interval after limited EST is unclear. Thus, this multicenter retrospective study was conducted to examine this matter.

View Article and Find Full Text PDF

Background: Risk stratification of postendoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) for common bile duct (CBD) stones is needed for clinicians to adequately explain to patients regarding the risk of PEP in advance of ERCP and to proactively take preventive measures in high-risk patients.

Aims: To stratify the risk of PEP for CBD stones based on CBD-related diseases.

Methods: A total of 1551 patients with naïve papilla who underwent ERCP for CBD stones were divided into three groups: Group A: asymptomatic CBD stones, Group B: obstructive jaundice and elevated liver test values without cholangitis, and Group C: mild, moderate, and severe cholangitis.

View Article and Find Full Text PDF

Objective: Dual-layer spectral detector computed tomography (DLCT) can detect noncalcified biliary stones. The diagnostic ability of DLCT for detecting biliary stones may be comparable to that of magnetic resonance cholangiopancreatography (MRCP). This study seeks to compare the diagnostic ability for biliary stones between these two imaging modalities.

View Article and Find Full Text PDF

Background And Aims: Papillary treatment, such as endoscopic sphincterotomy or endoscopic papillary balloon dilation, and subsequent single-stage endoscopic stone removal are often performed for choledocholithiasis; however, the incidence of postendoscopic retrograde cholangiopancreatography pancreatitis (PEP) is unclear. This study aimed to compare the overall incidence of PEP between single- and two-stage stone removal groups and the incidence of PEP between these two groups based on cannulation time.

Methods: We included 897 patients with native papilla who underwent papillary treatment and stone removal for choledocholithiasis with no inflammation or mild-to-moderate acute cholangitis at three institutions between April 2012 and March 2018 in Japan.

View Article and Find Full Text PDF

Background: Previous studies have revealed that patients with asymptomatic common bile duct (CBD) stones are at a high risk of developing post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). However, no studies to date have addressed the risk factors for PEP in patients with asymptomatic CBD stones.

Aim: To examine the risk factors for PEP in patients with asymptomatic CBD stones.

View Article and Find Full Text PDF

Purpose: The development of distant metastases (DMs) in patients with oral squamous cell carcinoma (OSCC) leads to dismal prospects for survival. The present study aimed to identify the risk factors for DM development and long-term survival.

Patients And Methods: The present study was a retrospective cohort study of patients with OSCC at a single institution.

View Article and Find Full Text PDF