Since annular pancreas as an anatomic anomaly was first described by Ecker15 in 1862, many articles on this subject have appeared in the literature. Compilations of reported cases * have served gradually to build up our knowledge concerning a condition which, so far as can be ascertained, was not diagnosed preoperatively before 1942.27 Hope and Gibbons23 stated that 48 cases treated surgically had been reported to July, 1953, and Skapinker39 in 1954 collected and reviewed 45 such cases. Only when sufficient cases have been reported will a sound basis for the proper therapeutic approach be established.
I have been able to collect 72 surgical cases through 1954 from the available literature, to which 1 case is added here (Tables 1 and 2), and it is believed this number is sufficient for further analysis at this time and tentative evaluation of the various methods of surgical treatment. As