[Differential diagnostic problems in acute and chronic hepatitis and hepato-cholangiographies of various etiologies in childhood].

The necessity is emphasized to perform always a careful anamnesis and a clinical inspection of patients before achieving laboratory examinations (avoiding to demand to a "check up" the diagnosis). This is particularly important in those diseases, like viral hepatitis, which become even more frequent, so that such diagnosis may be supposed basing on unreliable laboratory findings. The possibility is mentioned that different hepato-colangiopathies (Wilson's disease, intolerance to fructose, hepatic congenital fibrosis, hepatic ductal hypoplasia, granulomatous hepatitis, bacterial, micotic and protozoarian cholangitis, liver sufference in onchologic diseases) may simulate viral hepatitis.