[Differential diagnosis of XXXX by combined noninvasive diagnostic means using a logistic discriminant analysis].

@entity1 @entity137 @entity1087 @entity6283 @entity648 @entity409 @entity3 @entity157
Using a logistic discriminant function we retrospectively evaluated the diagnostic value of laboratory features and abdominal sonography in 70 @entity1 with @entity1087 . 18 @entity1 had an extrahepatic obstruction of the common bile duct (EHO), 22 @entity1 had @entity409 ( @entity409 ) and 30 @entity1 had an @entity137 ( @entity157 ). The sensitivity resp. specificity of the 5 laboratory values AP, GGT, @entity6283 , GOT and @entity648 was 22% resp. 90% for diagnosing EHO, 82% resp. 79% for diagnosing @entity409 and 67% resp. 68% for diagnosing @entity157 . The diagnostic value determined by their Chi2-value was AP greater than @entity6283 greater than @entity648 greater than GOT greater than GGT. An undoubtedly dilated common bile duct was seen in 56% of the @entity1 with EHO and in none of the other @entity1 . @entity3 were seen exclusively in 81% of the @entity1 with @entity409 . No distinct sonographic sign could be found for the @entity1 with @entity157 . The combination of AP, @entity6283 and @entity648 with the result of abdominal sonography in a logistic discriminant function led to a correct a posteriori classification of all @entity1 . Using a mathematical classification model @entity1087 @entity1 can be diagnosed on the basis of noninvasive methods alone and invasive procedures should be restricted to therapeutic interventions.
