Calvin Chan

ORCID: 0000-0001-8484-9084
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About
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Research Areas
  • Gallbladder and Bile Duct Disorders
  • Esophageal and GI Pathology
  • Esophageal Cancer Research and Treatment
  • Organ Transplantation Techniques and Outcomes
  • Biliary and Gastrointestinal Fistulas
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Pediatric Hepatobiliary Diseases and Treatments
  • Gastrointestinal Tumor Research and Treatment
  • Medical Imaging and Pathology Studies
  • Appendicitis Diagnosis and Management
  • RNA Interference and Gene Delivery
  • Biosimilars and Bioanalytical Methods
  • Renal Transplantation Outcomes and Treatments
  • Autoimmune and Inflammatory Disorders Research
  • Knee injuries and reconstruction techniques
  • Clinical Nutrition and Gastroenterology
  • Gastrointestinal Bleeding Diagnosis and Treatment
  • Meningioma and schwannoma management
  • Transplantation: Methods and Outcomes
  • Child Nutrition and Feeding Issues
  • Foreign Body Medical Cases
  • Hepatitis B Virus Studies
  • Gastric Cancer Management and Outcomes
  • Liver Diseases and Immunity
  • Gastrointestinal disorders and treatments

New York University Langone Orthopedic Hospital
2023

Chelsea and Westminster Hospital NHS Foundation Trust
2023

West Middlesex University Hospital
2023

Nepean Hospital
2014-2019

The University of Sydney
2019

Waikato Hospital
2018

Creative Research Enterprises (United States)
2017

EES Research (United Kingdom)
2017

University of British Columbia
2012-2013

Vancouver General Hospital
2012

Pre-cut techniques, the most commonly described being needle knife papillotomy (NK), have been used to facilitate biliary access in failed standard cannulation (BC). Transpancreatic septotomy (TS) is a pre-cut technique with limited outcome data. We aim assess outcomes of wire assisted transpancreatic (WTS) as primary after initial attempted BC and compare these NK.We retrospectively reviewed all endoscopic retrograde cholangiopancreatographies (ERCPs) performed by endoscopists who WTS over...

10.1111/j.1440-1746.2012.07111.x article EN Journal of Gastroenterology and Hepatology 2012-03-13

AIMTo determine the prevalence of esophageal squamous papillomas (ESPs) in a tertiary teaching hospital and to assess for any clinical associations, including relations with cell carcinomas (SCCs). METHODSData from total 6962 upper gastrointestinal endoscopies over five year period were retrospectively obtained analysed. RESULTSESP was found sixteen patients (0.23%).Eight (50%) had high body mass index, seven (44%) history cigarette smoking.Reflux esophagitis four (25%) patients.All ESPs...

10.12998/wjcc.v5.i4.134 article EN World Journal of Clinical Cases 2017-01-01

Biliary extraction baskets are a commonly used instrument for the removal of choledocholithiasis in endoscopic retrograde cholangiopancreatography (ERCP). Impaction basket is recognized complication ERCP, and usually result discrepancy between size bile duct stone diameter distal duct. Whilst mechanical lithotriptors can be to crush or break wires allow its release, failure lithotriptor device occur. We describe case 59-year-old gentleman who had an ERCP performed choledocholithiasis. Basket...

10.1155/2012/435050 article EN cc-by Case Reports in Gastrointestinal Medicine 2012-01-01

Background: Stent related occlusion and migration remains a problem despite attempts to improve stent design over this time period. Flanged polyethylene plastic stents (FPS) the of choice in most centers. Early failure placed for malignant extrahepatic biliary strictures (MEBS) has not previously been studied detail. We set out determine incidence reasons change within 30 days index procedure large tertiary center population during period where was sole used. Methods: Retrospective analysis...

10.4021/gr420w article EN cc-by-nc Gastroenterology Research 2012-01-01

Waiakto DHB is a tertiary hospital in New Zealand. It standard practise for Natalizumab to be administered at 6 weekly intervals Waikato DHB. We will report DHB's prospectively collected data and show that there no increased risk of clinical or radiological relapse compared with the dosing.

10.1212/wnl.90.15_supplement.p6.351 article EN Neurology 2018-04-10

Objectives: To identify synovial fluid biomarkers associated with midterm postoperative outcomes in patients undergoing arthroscopic partial meniscectomy (APM). Methods: Subjects were prospectively enrolled a cohort of who had aspirated from their knee on the day surgery prior to APM. Biomarker analysis was performed. Preoperative patient-reported outcome (PRO) scores including VAS pain, Lysholm and Tegner activity score collected preoperatively. At minimum 2 years follow-up collected. Using...

10.1177/2325967123s00062 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2023-07-01

Abstract Background Timely management is essential in preventing recurrence of gallstone disease and The National Institute for Clinical Excellence (NICE) recommends that laparoscopic cholecystectomy (LC) should be performed within seven days admission. However, there remains wide variation between NHS Trusts managing disease. As part an ongoing surgical quality improvement project, a restructured Upper Gastrointestinal Surgery (UGI) firm was created (with three dedicated UGI consultant...

10.1093/bjs/znad348.060 article EN British journal of surgery 2023-11-01

10.1053/j.gastro.2012.08.022 article EN Gastroenterology 2012-08-20

10.1054/bjom.2000.0609 article EN British Journal of Oral and Maxillofacial Surgery 2002-02-01
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