For the IUS Monthly August 2023 Webinar, Dr. Rishika Chugh (Assistant Professor of Medicine, UCSF) presents a case on the use of intestinal ultrasound for monitoring disease activity serially in ulcerative colitis and Dr. Mallory Chavannes (Assistant Professor of Pediatrics, CHLA) presents a case on the use of intestinal ultrasound as a diagnostic and monitoring tool in pediatric Crohn's disease.