AN ANNULAR pancreas may produce symptoms over a wide span of years, ranging from the early neonatal period to late in life. When I reviewed the literature concerning this unusual malformation in 1952,8 only 70 cases had been reported and the majority of the patients were adults. Only 19% of these patients were in their first year of life. However, 47 new cases have been reported since 1952, and a rather remarkable reversal of age incidence has occurred. Of the 47 new patients, 33 have been infants (70%). It is also of interest to note that, while adult cases continue to appear in the literature as reports of single cases, infant cases are now being reported in series of 5, 6, and 10 cases.*
Duodenal obstruction, peptic ulceration of the stomach or duodenum, pancreatitis, and common-bile-duct obstruction are the major clinical disturbances which may result from the presence of
MOORE TC. ANNULAR PANCREAS, COMMON-DUCT COMPRESSION, AND CHOLELITHIASIS. AMA Arch Surg. 1956;73(6):1050–1054. doi:https://doi.org/10.1001/archsurg.1956.01280060150033
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