Amitabh Chak

Hypernephroma metastatic to the pancreas.

Acute pancreatitis resulting from a nonfunctional islet cell tumor detected and localized by EUS.

Accuracy of a narrow-diameter battery-powered endoscope in sedated and unsedated patients.

A prospective evaluation of outcome in patients referred for PEG placement.

Patient tolerance and acceptance of unsedated ultrathin esophagoscopy.

Correlation of EUS measurement with pathologic assessment of neoadjuvant therapy response in esophageal carcinoma.

EUS-guided fine needle aspiration of idiopathic abdominal masses.

EUS-guided fine needle aspiration of the liver: indications, yield, and safety based on an international survey of 167 cases.

Association of prediagnosis endoscopy with stage and survival in adenocarcinoma of the esophagus and gastric cardia.

EUS in submucosal tumors.

Endoscopic ultrasound-guided fine needle aspiration in the diagnosis of mediastinal masses of unknown origin.

Endoscopic retrograde cholangiopancreatography in children and adolescents.

Effectiveness of open-access endoscopy in routine primary-care practice.

A time for change.

Prospective evaluation of 4-mm diameter endoscopes for esophagoscopy in sedated and unsedated patients.

Clinical utility of intraductal US for evaluation of choledocholithiasis.

Evaluation of a new curved linear array echoendoscopy system for EUS.

Unsedated EGD.

Criteria for the diagnosis of dysplasia by endoscopic optical coherence tomography.

Prediction of outcome in acute lower-gastrointestinal haemorrhage based on an artificial neural network: internal and external validation of a predictive model.

Long-term follow-up of patients with clinically indeterminate suspicion of pancreatic cancer and normal EUS.

Endoscopic management of adenoma of the major duodenal papilla.

Association of ampullary and colorectal malignancies.

Innovative methods of biliary tract diagnosis: intraductal ultrasound and tissue acquisition.

Sphincter of Oddi manometry does not predispose to post-ERCP acute pancreatitis.

Success and shortcomings of a clinical care pathway in the management of acute nonvariceal upper gastrointestinal bleeding.

Acute pancreatitis after EUS-guided FNA of solid pancreatic masses: a pooled analysis from EUS centers in the United States.

Does prophylactic pancreatic stent placement reduce the risk of post-ERCP acute pancreatitis? A meta-analysis of controlled trials.

Eosinophilic enteritis.

Identification of Barrett's esophagus in relatives by endoscopic screening.

An international survey of the clinical practice of EUS.

EUS assessment of response to chemoradiation in esophageal cancer patients.

Increased risk of squamous cell esophageal cancer after adjuvant radiation therapy for primary breast cancer.

Role of endoscopic ultrasonography in the staging of esophageal cancer: a review.

The yield of bleeding scans in acute lower gastrointestinal hemorrhage.

A novel use of endoscopic clips in the treatment planning for radiation therapy (XRT) of esophageal cancer.

Endoscopic treatment of high-grade dysplasia and early cancer in Barrett's oesophagus.

The changing landscape of practice patterns regarding unsedated endoscopy and propofol use: a national Web survey.

Pancreatic cysts: much ado or not enough?

Accuracy of endoscopic optical coherence tomography in the detection of dysplasia in Barrett's esophagus: a prospective, double-blinded study.

In vivo optical coherence tomography imaging of the pancreatic and biliary ductal system.

The polyp detection rate of colonoscopy: a national study of Medicare beneficiaries.

Primary care physician attitudes toward endoscopic screening for GERD symptoms and unsedated esophagoscopy.

Sedationless upper endoscopy.

Quality indicators for gastrointestinal endoscopic procedures: an introduction.

Quality indicators for esophagogastroduodenoscopy.

Quality indicators for colonoscopy.

Quality indicators for endoscopic retrograde cholangiopancreatography.

Quality indicators for endoscopic ultrasonography.

Quality indicators for gastrointestinal endoscopic procedures: an introduction.

Quality indicators for colonoscopy.

Quality indicators for esophagogastroduodenoscopy.

Quality indicators for endoscopic retrograde cholangiopancreatography.

Quality indicators for endoscopic ultrasonography.

Endoscopic ultrasonography and prognosis of esophageal cancer.

Association of esophageal adenocarcinoma with other subsequent primary cancers.

Temporal trend in relative risk of second primary colorectal cancer.

Sedationless upper endoscopy.

Familiality in Barrett's esophagus, adenocarcinoma of the esophagus, and adenocarcinoma of the gastroesophageal junction.

A primer on natural orifice transluminal endoscopic surgery: building a new paradigm.

Gastroesophageal reflux symptoms in patients with adenocarcinoma of the esophagus or cardia.

Colorectal screening after polypectomy: a national survey study of primary care physicians.

Should there be light in the esophageal tunnel? An appraisal of optical coherence tomography in Barrett's esophagus.

Gastroesophageal reflux disease-associated esophagitis induces endogenous cytokine production leading to motor abnormalities.

Endoscopic Doppler US probe for the diagnosis of gastric varices (with videos).

Pancreatic-stent placement for prevention of post-ERCP pancreatitis: a cost-effectiveness analysis.

Natural orifice transluminal endoscopic surgery (NOTES) as a diagnostic tool in the intensive care unit.

Interobserver agreement for EUS findings in familial pancreatic-cancer kindreds.

Mechanical lithotripsy of pancreatic and biliary stones: complications and available treatment options collected from expert centers.

Consortium approach to identifying genes for Barrett's esophagus and esophageal adenocarcinoma.

Postprocedure radiologist's interpretation of ERCP x-ray films: a prospective outcomes study.

Unsedated small-caliber endoscopy--a new screening and surveillance tool for Barrett's esophagus?

Ultrathin esophagoscopy in screening for Barrett's esophagus at a Veterans Administration Hospital: easy access does not lead to referrals.

Complete endoscopic closure of gastric defects using a full-thickness tissue plicating device.

Carbohydrate consumption and esophageal cancer:an ecological assessment.

EUS spectrum analysis for in vivo characterization of pancreatic and lymph node tissue: a pilot study.

Artificial neural network as a predictive instrument in patients with acute nonvariceal upper gastrointestinal hemorrhage.

Quality in endoscopy: it starts during fellowship.

Late phase TNF-alpha depression in natural orifice translumenal endoscopic surgery (NOTES) peritoneoscopy.

EUS-FNA in unresectable cholangiocarcinoma: a novel indication.

Infectious implications in the porcine model of natural orifice transluminal endoscopic surgery (NOTES) with PEG-tube closure: a quantitative bacteriologic study.

Creation of an effective and reproducible nonsurvival porcine model that simulates actively bleeding peptic ulcers.

EUS in localizing safe alternate access sites for natural orifice transluminal endoscopic surgery: initial experience in a porcine model.

What is the evidence for EUS-guided celiac plexus block/neurolysis?

EUS and natural orifice transluminal endoscopic surgery.

EUS 2008 Working Group document: evaluation of EUS-guided vascular therapy.

Phase II and pharmacokinetic trial of rebeccamycin analog in advanced biliary cancers.

Radiofrequency ablation in Barrett's esophagus with dysplasia.

Assessment of familiality, obesity, and other risk factors for early age of cancer diagnosis in adenocarcinomas of the esophagus and gastroesophageal junction.

Receipt of previous diagnoses and endoscopy and outcome from esophageal adenocarcinoma: a population-based study with temporal trends.

Asymptomatic pancreatic cystic neoplasm: a cost-effectiveness analysis of different strategies of management.

Sedation during endoscopy for patients at risk of obstructive sleep apnea.

Are large side holes associated with reduced rates of pancreatic stent occlusion? Results of a prospective study.

In vivo characterization of pancreatic and lymph node tissue by using EUS spectrum analysis: a validation study.

Characterization of pancreatic cancer and intra-abdominal lymph node malignancy using spectrum analysis of endoscopic ultrasound imaging.

A segregation analysis of Barrett's esophagus and associated adenocarcinomas.

Variability in measurements of pancreatic cyst size among EUS, CT, and magnetic resonance imaging modalities.

The diagnostic efficacy of natural orifice transluminal endoscopic surgery: is there a role in the intensive care unit?

Endoscopic mucosal resection with full-thickness closure for difficult polyps: a prospective clinical trial.

Hydroperitoneum-facilitated EUS-guided peritoneal entry and closure of alternate access sites for NOTES.

Primary malignant melanoma of the hepatic duct: a case report.

Endoscopic Doppler US for the prevention of ulcer bleeding after endoscopic submucosal dissection for early gastric cancer: a preliminary study (with video).

Transgastric natural-orifice transluminal endoscopic surgery peritoneoscopy in humans: a pilot study in efficacy and gastrotomy site selection by using a hybrid technique.

Updated guidelines for live endoscopy demonstrations.

Biopsy depth after radiofrequency ablation of dysplastic Barrett's esophagus.

EUS and survival in patients with pancreatic cancer: a population-based study.

Initial evaluation of a novel, prototype, forward-viewing echoendoscope in a porcine arterial bleeding model (with video).

EUS compared with endoscopy plus transabdominal US in the initial diagnostic evaluation of patients with upper abdominal pain.

Screening for Barrett's Esophagus.

Experience with the new 4-way, 5.5-mm ultrathin endoscope: a case series.

Covered stents for the treatment of life-threatening cervical esophageal anastomotic leaks.

Endoscopically guided spectral-domain OCT with double-balloon catheters.

Gender disparities and gastroenterology trainee attitudes toward advanced endoscopic training.

Endoscopic access to and exploration of the lesser sac in a human cadaver model: opportunity for transgastric endoscopic pancreatic surgery (with video).

Prevalence of Barrett esophagus in first-degree relatives of patients with esophageal adenocarcinoma.

Durability of radiofrequency ablation in Barrett's esophagus with dysplasia.

Prevalence and clinical significance of pancreatic cysts associated with cysts in other organs.

Endoscopic management of Barrett esophagus.

Association of insulin and insulin-like growth factors with Barrett's oesophagus.

Racial differences in measures of obesity and risk of colon adenoma.

Motion artifacts associated with in vivo endoscopic OCT images of the esophagus.

Insulin resistance, central obesity, and risk of colorectal adenomas.

DNA methylation profiling in Barrett's esophagus and esophageal adenocarcinoma reveals unique methylation signatures and molecular subclasses.

Aberrantly methylated PKP1 in the progression of Barrett's esophagus to esophageal adenocarcinoma.

Variation in age at cancer diagnosis in familial versus nonfamilial Barrett's esophagus.

EUS or percutaneously guided intratumoral TNFerade biologic with 5-fluorouracil and radiotherapy for first-line treatment of locally advanced pancreatic cancer: a phase I/II study.

The microRNAs, MiR-31 and MiR-375, as candidate markers in Barrett's esophageal carcinogenesis.

Aberrant vimentin methylation is characteristic of upper gastrointestinal pathologies.

Feasibility, safety, acceptability, and yield of office-based, screening transnasal esophagoscopy (with video).

Small bowel capsule endoscopy in patients with cardiac pacemakers and implantable cardioverter defibrillators: Outcome analysis using telemetry review.

A randomized trial of rectal indomethacin to prevent post-ERCP pancreatitis.

Characterization of the pancreas in vivo using EUS spectrum analysis with electronic array echoendoscopes.

Phase I evaluation of TNFerade biologic plus chemoradiotherapy before esophagectomy for locally advanced resectable esophageal cancer.

Consensus statements for management of Barrett's dysplasia and early-stage esophageal adenocarcinoma, based on a Delphi process.

Development of subsquamous high-grade dysplasia and adenocarcinoma after successful radiofrequency ablation of Barrett's esophagus.

Immediate unprepared hydroflush colonoscopy for severe lower GI bleeding: a feasibility study.

Biodegradable esophageal stent placement does not prevent high-grade stricture formation after circumferential mucosal resection in a porcine model.

A combination of esomeprazole and aspirin reduces tissue concentrations of prostaglandin E(2) in patients with Barrett's esophagus.

Preservation and Incorporation of Valuable Endoscopic Innovations (PIVI) on the use of endoscopy simulators for training and assessing skill.

International Cancer of the Pancreas Screening (CAPS) Consortium summit on the management of patients with increased risk for familial pancreatic cancer.

Does rectal indomethacin eliminate the need for prophylactic pancreatic stent placement in patients undergoing high-risk ERCP? Post hoc efficacy and cost-benefit analyses using prospective clinical trial data.

Cap-assisted ERCP with a forward-viewing gastroscope as a rescue endoscopic intervention in patients with Billroth II anatomy.

Association of Barrett's Esophagus With Type II Diabetes Mellitus: Results From a Large Population-based Case-Control Study.

Prevalence of extra-esophageal cancers in patients with Barrett's esophagus and esophageal adenocarcinoma.

Barrett's esophagus and the risk of obstructive sleep apnea: a case-control study.

Preliminary results of antiscarring therapy in the prevention of postendoscopic esophageal mucosectomy strictures.