Abstract
Morio Kasai is one of the most influential Japanese pediatric surgeons. He is best recognized in the United States for his pioneering efforts in the field of biliary atresia. His work revolutionized the treatment of infants born with biliary atresia throughout the world. Less is known about his remarkable impact in the fields of general surgery and pediatric surgery. This review highlights some of Dr Kasai's major contributions and highlights the influence he had in the establishment of pediatric surgery as a field.