Gyanprakash Ketwaroo
Associate Professor of Medicine (Digestive Diseases)Cards
About
Research
Publications
2025
Pancreatic Ductal Adenocarcinoma After Hepatitis C Infection
Levinson R, Bushman R, Tate J, Skanderson M, Mezzacappa C, Park L, Brandt C, Schuster K, Ketwaroo G, Yang Y, Justice A, Wang L. Pancreatic Ductal Adenocarcinoma After Hepatitis C Infection. JAMA Network Open 2025, 8: e2543701. PMID: 41236736, PMCID: PMC12619103, DOI: 10.1001/jamanetworkopen.2025.43701.Peer-Reviewed Original ResearchConceptsVeterans Health AdministrationChronic hepatitis C virusPancreatic ductal adenocarcinomaChronic HCV infectionHepatitis C virusHepatitis C virus genotype 3Cohort studyHepatitis C virus infectionHepatitis C virus genotypePopulation-based cohort studyHCV infectionCohort study of veteransIncident pancreatic ductal adenocarcinomaHepatitis C virus testingCox proportional hazards regressionStudy of veteransRisk of pancreatic ductal adenocarcinomaHigh riskProportional hazards regressionDuctal adenocarcinomaExposure to hepatitis C virusGenotype 2Genotype 3Hepatitis C virus exposureHepatitis C virus statusCancer disparities in lean vs. non-lean MASH: insight from a national inpatient sample
Ezeani C, Omaliko C, Protiva P, Al-Ajlouni Y, Ketwaroo G, Njei B. Cancer disparities in lean vs. non-lean MASH: insight from a national inpatient sample. BMC Gastroenterology 2025, 25: 659. PMID: 41013214, PMCID: PMC12465481, DOI: 10.1186/s12876-025-04187-1.Peer-Reviewed Original ResearchConceptsCancer disparitiesNational Inpatient SampleCancer prevalenceHigher oddsOdds of endometrial cancerInpatient SampleMultivariate logistic regressionMethodsThis retrospective cohort studyRetrospective cohort studyCancer riskNon-Hodgkin's lymphomaU.S. hospitalsLower BMIU.S. cohortCohort studyGeneral populationLogistic regressionNon-leanBMIOncological riskEndometrial cancerHospitalAlternative etiologiesCervical cancerProject findingsUnusual Complication of Percutaneous Gastrostomy Tube Replacement
Liang S, Ketwaroo G, Njei B, Ogurick A, Rabiee A, Protiva P. Unusual Complication of Percutaneous Gastrostomy Tube Replacement. ACG Case Reports Journal 2025, 12: e01834. PMID: 40970177, PMCID: PMC12443151, DOI: 10.14309/crj.0000000000001834.Peer-Reviewed Original ResearchLong-term nutritional supportPercutaneous endoscopic gastrostomy tube insertionGastric outlet obstructionComplete gastric outlet obstructionGastrostomy tube insertionPercutaneous endoscopic gastrostomy tubeOutlet obstructionEsophageal cancerNutritional supportTube insertionGastrostomy tubeCritical illnessNeurological conditionsTHE OVERTUBE-ASSISTED PERCUTANEOUS PULL GASTROSTOMY TUBE PLACEMENT IS SAFE IN PATIENTS WITH HEAD AND NECK CANCER
Protiva P, Ketwaroo G, Njei B, Saha S. THE OVERTUBE-ASSISTED PERCUTANEOUS PULL GASTROSTOMY TUBE PLACEMENT IS SAFE IN PATIENTS WITH HEAD AND NECK CANCER. Gastrointestinal Endoscopy 2025, 101: s233. DOI: 10.1016/j.gie.2025.03.403.Peer-Reviewed Original ResearchSu1253: IMPROVING ADHERENCE TO FAMILIAL SCREENING RECOMMENDATIONS FOLLOWING DETECTION OF ADVANCED ADENOMAS: A QUALITY IMPROVEMENT INITIATIVE
Ketwaroo G, Miniter C, Ogurick A, Njei B, Protiva P. Su1253: IMPROVING ADHERENCE TO FAMILIAL SCREENING RECOMMENDATIONS FOLLOWING DETECTION OF ADVANCED ADENOMAS: A QUALITY IMPROVEMENT INITIATIVE. Gastroenterology 2025, 169: s-724-s-725. DOI: 10.1016/s0016-5085(25)02613-7.Peer-Reviewed Original ResearchHigh Risk of Persistence and Risk of Dysplasia After Diagnosis of Ultrashort Barrett's Esophagus.
Skef W, Haydel J, Rao A, Allencherril R, George R, Ketwaroo G, Thrift A, El-Serag H, Wenker T. High Risk of Persistence and Risk of Dysplasia After Diagnosis of Ultrashort Barrett's Esophagus. The American Journal Of Gastroenterology 2025 PMID: 40052679, PMCID: PMC12266607, DOI: 10.14309/ajg.0000000000003383.Peer-Reviewed Original ResearchFollow-up EGDRisk of dysplasiaBody mass indexBarrett's esophagusPersistent BEFollow-upCohort of United States veteransWhite raceLong segment BEUnited States veteransHispanic ethnicityPredictor of dysplasiaFollow-up endoscopyClinical risk factorsRetrospective cohort studyNon-Hispanic black patientsNon-HispanicRisk of persistenceProportion of non-HispanicChi-square testConsecutive patientsStates veteransPathology databaseHighest risk of persistenceBE diagnosis
2024
Performance of Ulcer Features in Predicting Malignancy Among Gastric Ulcers Diagnosed on Upper Endoscopy.
Patel A, Gandle C, Baerman E, Lill I, Pecha R, Nguyen Wenker T, El-Serag H, Ketwaroo G, Tan M. Performance of Ulcer Features in Predicting Malignancy Among Gastric Ulcers Diagnosed on Upper Endoscopy. Journal Of Clinical Gastroenterology 2024 PMID: 39761160, PMCID: PMC12203138, DOI: 10.1097/mcg.0000000000002118.Peer-Reviewed Original ResearchSurveillance endoscopyGastric atrophyIrregular bordersElevated borderGastric ulcerMalignant ulcersUlcer featuresGastric ulcer diagnosisPrevalence of malignancyPredictors of malignancyBenign gastric ulcerBiopsy histopathologyForrest classificationUpper endoscopyPredicting malignancyUlcer diagnosisMalignant featuresEndoscopic appearanceMalignancyPrevalent malignancyEndoscopyBenign ulcerPatientsPredictive valueHistopathologyS2281 Non-Cardia Primary Squamous Cell Carcinoma of the Stomach Is Extremely Rare and Shows Poor Survival
Protiva L, Ketwaroo G, Njei B, Protiva P. S2281 Non-Cardia Primary Squamous Cell Carcinoma of the Stomach Is Extremely Rare and Shows Poor Survival. The American Journal Of Gastroenterology 2024, 119: s1634-s1635. DOI: 10.14309/01.ajg.0001038492.00710.80.Peer-Reviewed Original ResearchS3554 Safety and Efficacy of Overtube-Assisted Percutaneous Gastrostomy Tube Placement in Patients With Head and Neck Cancer: A Case Series
Saha S, Ketwaroo G, Ogurick A, Njei B, Protiva P. S3554 Safety and Efficacy of Overtube-Assisted Percutaneous Gastrostomy Tube Placement in Patients With Head and Neck Cancer: A Case Series. The American Journal Of Gastroenterology 2024, 119: s2353-s2354. DOI: 10.14309/01.ajg.0001043584.46794.74.Peer-Reviewed Original ResearchS3535 Unusual Complication of Percutaneous Gastrostomy Tube Replacement
Liang S, Ketwaroo G, Njei B, Ogurick A, Rabiee A, Protiva P. S3535 Unusual Complication of Percutaneous Gastrostomy Tube Replacement. The American Journal Of Gastroenterology 2024, 119: s2341-s2341. DOI: 10.14309/01.ajg.0001043508.94655.75.Peer-Reviewed Original Research
Academic Achievements & Community Involvement
News
News
- November 17, 2025
Chronic Hepatitis C Linked to Increased Risk of Pancreatic Cancer, New Study Shows
- February 19, 2025
Improving Ergonomics in Endoscopy to Prevent Injury and Improve Quality
- October 22, 2024
AI-Assisted Colonoscopy: New Research and Guidelines for Clinical Use
- September 26, 2024Source: TODAY
The BRAT Is a Go-To for Stomach Bugs. But Experts Are Recommending It Less Often — Here's Why
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Yale School of Medicine
Department of Medicine (Digestive Diseases), PO Box 208019
New Haven, CT 06520-8019
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