Vicarious Excretion of Contrast Through the Gallbladder on Computed Tomography

Susan Feldman, MD, is an internal medicine physician at Carilion Clinic and Virginia Tech Carilion School of Medicine in Roanoke, Virginia. She earned her medical degree from Saba University School of Medicine after completing a post-baccalaureate program at the University of South Carolina School of Medicine and a BS in Biology from the College of Charleston. She completed her internal medicine residency at Prisma Health in Columbia, South Carolina, where she served as a categorical chief resident.

Rami J. K. Musallam, MD, is a gastroenterology fellow at Carilion Clinic and Virginia Tech Carilion School of Medicine. He earned his medical degree from the Islamic University of Gaza Faculty of Medicine and completed his internal medicine residency at Case Western Reserve University in Cleveland. He has published on gastroesophageal reflux disease, primary sclerosing cholangitis, and endoscopic procedures.

Alexandru Coseru, MD, is a gastroenterologist with the Arcadia Medical Network in Iași, Romania. He trained at the Institute of Gastroenterology and Hepatology in Iași and spent 12 months at the Centre Hospitalier de Perpignan, France. He teaches medical semiology and gastroenterology at Grigore T. Popa University of Medicine and Pharmacy, Iași, where he is a PhD candidate in pancreatology.

His practice covers diagnostic and therapeutic upper and lower endoscopy, polypectomy, variceal banding, stricture dilation, and abdominal ultrasound. He completed the ESGE Research Camp in Munich and won first prize in the endoscopy section of the 2025 National Summer School of Gastroenterology and Hepatology in Sibiu. Published work includes a first-author case report on apixaban-induced superficial dissecting esophagitis (Diseases, 2024). Member of the Romanian Society of Gastroenterology, the Romanian Society of Digestive Endoscopy, and ESGE.

Paul Yeaton, MD, is a gastroenterologist at Carilion Clinic in Roanoke, Virginia, and Professor of Internal Medicine and Radiology at Virginia Tech Carilion School of Medicine. He has served as section chief of gastroenterology at Carilion and as director of its gastroenterology fellowship program.

He earned his medical degree and completed his internship and internal medicine residency at West Virginia University, then completed gastroenterology fellowships at the University of Virginia and the Free University of Brussels. His clinical focus is interventional endoscopy, including therapeutic ERCP and endoscopic ultrasound, with an emphasis on pancreatic, biliary, and liver disease, gastrointestinal cancers, and non-surgical management of lesions of the stomach, duodenum, and colon.

Klaus Mönkemüller, MD, PhD, FASGE, FJGES, FESGE, is the editor-in-chief of The Practicing Endoscopist and the founder of EndoCollab. He is Professor of Medicine at Virginia Tech Carilion School of Medicine and a practicing endoscopist at Carilion Memorial Hospital in Roanoke, Virginia.

Dr. Mönkemüller has published extensively on endoscopic techniques and devices, with a particular focus on therapeutic endoscopy, foreign body removal, GI bleeding, and the use of caps and accessories in everyday practice. He lectures internationally and has contributed to multiple GI endoscopy textbooks and atlases.