Undescended testicles are common congenital anomalies in which one or more of a baby’s testicles have not moved into the proper position. Prompt diagnosis through a thorough physical exam, typically followed by surgery, can help prevent future complications. Yet research suggests that primary care physicians may not be comfortable or confident performing the exam. Watch Boston Children’s urologists describe their new simulation-based training program, which aims to improve the diagnosis and management of this condition.