Russell S. Vang, MD

Dr. Andrés Matoso, MD, is a Professor of Pathology, Urology, and Oncology at Johns Hopkins University School of Medicine and currently serves as Director of the Urologic Pathology Division and the Genitourinary Pathology Fellowship Program. He earned his medical degree from the University of Buenos Aires in 2002, followed by clinical training in urology at Hospital Militar Central in Buenos Aires. After moving to the United States, he completed a postdoctoral fellowship in cancer biology at Cornell University, where he investigated mechanisms of tumor biology and progression. Dr. Matoso subsequently pursued residency training in Anatomic and Clinical Pathology at Brown University, where he also completed a fellowship in gastrointestinal and liver pathology. He further specialized in urologic pathology through fellowship training at Johns Hopkins Hospital, before joining the Johns Hopkins faculty in 2017. Since then, he has become an integral leader of the Urologic Pathology Consult Service, which reviews more than 5,000 cases annually from national and international institutions, making it one of the largest such services in the world. In this role, he provides expert diagnostic consultation on highly complex and rare cases, and he is actively engaged in mentoring residents and fellows through advanced subspecialty training. Dr. Matoso’s research program focuses on the molecular and morphologic underpinnings of urologic malignancies, with particular emphasis on the genetic alterations associated with bladder cancer development and progression, refinements in prostate cancer grading, and the characterization of uncommon and diagnostically challenging urologic tumors. His translational research bridges molecular diagnostics and histopathology, contributing to improved classification, prognostication, and therapeutic stratification in genitourinary cancers. He has published extensively in the field, authoring more than 170 peer-reviewed scientific articles, seven book chapters—including authoritative contributions to the World Health Organization (WHO) classification of urologic and pediatric tumors—and a widely used textbook, Survival Guide to Prostate Pathology. His scholarly work has been recognized with several awards, including the prestigious Stowell-Orbison Award from the United States and Canadian Academy of Pathology. Beyond his research and clinical practice, Dr. Matoso is an internationally sought-after speaker and educator, lecturing widely at national and international scientific meetings, workshops, and academic institutions.

Dr. Francis Deng is an expert in neuroradiology, specializing in diagnostic imaging of the head, neck, brain, and spine. He is a magna cum laude graduate of Harvard College and earned his medical degree from Washington University in St. Louis School of Medicine. He then completed a medical internship at the Brigham and Women's Hospital, followed by diagnostic radiology residency and neuroradiology fellowship at Massachusetts General Hospital, both affiliates of Harvard Medical School. Dr. Deng is a recognized educator both locally and internationally. He has authored chapters in bestselling textbooks such as First Aid for the USMLE Step 1 and Core Radiology: A Visual Approach to Diagnostic Imaging. He is an Editor of Radiopaedia.org and was Co-Convener of the Radiopaedia 2024 Virtual Conference, which had more than 13,000 registrants globally. With Medality (MRI Online), he was core faculty for the Fellowship Certificate programs on Brain & Spine Neuroradiology and for Stroke Imaging. For several high-impact radiology journals, Dr. Deng has received distinguished reviewer awards and served in editorial roles. He was a Visiting Scholar with the American Board of Medical Specialties in 2023-2024 and, as a student, served on the Board of Directors of the National Resident Matching Program. Dr. Deng has an academic interest in diagnostic excellence and error. Locally, he holds regular quality assurance conferences for radiology residents to learn from misses and misinterpretations. He hosted a podcast series on this topic published under the aegis of the American Journal of Roentgenology. He also serves as an expert witness in medical liability/malpractice cases.

Dr. Ezra Baraban is assistant professor of pathology at the Johns Hopkins University School of Medicine. His areas of clinical expertise include surgical pathology, with subspecialty concentrations in urologic and bone and soft tissue pathology. He has research interests in genitourinary and sarcoma tumor pathology, and is involved in multiple research projects across the spectrum of genitourinary and mesenchymal tumors. He is also actively involved in teaching pathology residents and medical students at Johns Hopkins.