16 CH Classification De-Groote in 1968: according to liver biopsy with or without piecemeal necrosis(PN,碎片样), ch is divided into two forms. Chronic Active Hepatitis (Cah)----prognosis: better Chronic persistent Hepatitis (CPH)----develop to cirrhosis, worse CAH (PNI CPHCH Classification De-Groote in 1968 : according to liver biopsy with or without piecemeal necrosis (PN,碎片样) , CH is divided into two forms. Chronic Active Hepatitis (CAH) ----prognosis: better Chronic Persistent Hepatitis (CPH)----develop to cirrhosis, worse CAH (PN) CPH 16