Abstract:
It has been established through means of anatomical investigations that the muscular tunic of the gastroduodenal junction in late fetuses and newborns are permeated by connective tissue bands whose thickness is the greatest within the limits of the syntopic field of the pancreas. According to ultrasonic examinations of the diameter of the pyloric canal and the pyloric ostium, the thickness of the pyloric walls is larger in infants than in newborns, and the distinction is greater in males than in females