XXXX : historic (1745-1949) versus contemporary (1950-1984) differences in etiology and clinical importance.

@entity1 @entity7971 @entity1756 @entity245 @entity439 @entity397 @entity490 @entity731 @entity204 @entity438
@entity438 were encountered in nine @entity1 , ranging in age from 39 to 76 years, at the University of Michigan Medical Center between 1961 and 1983. @entity245 and @entity731 were etiologic factors in six cases. Four @entity1 were without symptoms, whereas five experienced @entity490 , including one with a @entity1756 . Eight @entity1 were subjected to surgical treatment; no @entity204 occurred and symptoms were resolved in all @entity1 . A literature review of 108 celiac @entity438 revealed two distinct subgroups. Among 60 celiac @entity438 encountered before 1950, representing the historic @entity7971 , 40% were infectious (usually luetic), 7% were traumatic, and 52% were of undetermined cause. Most were symptomatic, 87% ruptured, and 95% were diagnosed at postmortem examination. The contemporary @entity7971 since 1950 consisted of 48 cases, including nine in the Michigan experience. Congenital or developmental medial defects of the arterial wall and @entity731 were the most common causes of @entity439 . Most @entity439 in the contemporary period were either asymptomatic or accompanied by vague abdominal discomfort. @entity397 affected 13% of those @entity439 . Operative therapy was successfully undertaken in 91% of 43 @entity1 during the contemporary @entity7971 , including eight in the present series.
