The causes of portal hypertension secondary to mechanical obstruction in the extrahepatic venous system have been well described.1 Among other etiological factors, however, little attention has been paid to inflammatory disease of the pancreas; namely, pseudocysts with their attendant complications and their proper demonstration by splenoportal venography. The latter technique, to be sure, has become well established in recent years and has provided the clinician with a convenient and invaluable tool that can uncover pathology within the portal venous system.2,3 It is the purpose of this report to present our experience with three cases of pancreatic pseudocysts associated with portal venous hypertension and to discuss the pertinent clinical features. The diagnosis in each case was established by splenoportography and later confirmed by operation or necropsy. Report of Cases Case 1.—A 51-year-old white male entered St. Vincent's Hospital on Sept 10, 1962, because of melena of two months' duration. The patient was