RT Journal A1 SCOTT J T1 PAncreatic cyst JF Archives of Surgery JO Archives of Surgery YR 1949 FD December 1 VO 59 IS 6 SP 1304 OP 1318 DO 10.1001/archsurg.1949.01240041318010 UL http://dx.doi.org/10.1001/archsurg.1949.01240041318010 AB IF PANCREATIC cyst were not an uncommon condition, it might be mistaken for carcinoma of the stomach more frequently. During the past twelve years there were 8 cases of pancreatic cyst and 596 cases of carcinoma of the stomach among a total of 160,011 patients admitted to Mercy Hospital, a ratio of 1:75:20,000.Cysts may be classified into five major groups: (1) developmental—arising on the basis of congenital anomaly; (2) degenerative—the inflammatory-traumatic cyst or pseudocyst, comprising the majority of all pancreatic cysts; (3) obstructive—the small retention or mechanical cyst, the result of obstruction from stone, carcinoma or proliferation of the ductal epithelium; (4) proliferative—composed principally of cystadenoma and cystadenocarcinoma; (5) parasitic—caused by Echinococcus (hydatid).ANATOMY AND PRESENTATION OF CYSTS  The adult pancreas is an elongated, flattened, wedge-shaped structure lying in the transverse-oblique position in the posterior epigastric and hypochondriac regions. Because of the unyielding nature of the vertebral column