The article by Froehlich and Fujikura1 on the prognosis of single umbilical artery is a much needed and highly informative addition to the literature. It presents a great deal of information and some important implications as to future management. We question the mortality rates quoted. They are given as percentages, and include stillbirths and neonatal deaths, i.e., perinatal mortality. The figure given as the general mortality rate is 3.8% or 38 per 1,000 births. Previous figures cited for perinatal mortality in the United States have varied from approximately 19 per 1,000 to approximately 26 per 1,000.2-4 We wonder how the figure of 38 per 1,000 was determined.
Type I choledochal cyst – an atypical presentation and an unusual association with single umbilical artery