Annular pancreas in the newborn.

In annular pancreas a collar or ring of tissue surrounds the second part of the duodenum. It is a rare malformation. Vidal published the first case in 1905; his patient was a newborn baby. In a recent publication, Swynnerton and Tanner (1953) collected 76 cases and we have found one more in the literature (MacPhee, 1953). In 1933 McNaught could only find 40 instances of this condition in the literature, most of them necropsy findings, but during the last three years over 20 cases have been published, all of them discovered at operation. As annular pancreas is a congenital malformation, it is surprising that only nine of the 77 recorded cases were found in newborn babies. It therefore seems worth recording that we have encountered