[What histology is normal and abnormal in the liver?]

Normal and abnormal morphologies of the liver were histopathologically reviewed. Characteristic structure and specialized functions of the liver, and the age and life style of the patients should be taken into consideration of the evaluation of abnormal liver morphologies. The latter were generally classified into pathologic changes, nonspecific and non-significant findings, agonal changes and postmortem changes. Pathologic changes were subdivided into several categories according to their pathogenesis and etiologies. While postmortem changes lack of vital reaction, apoptosis, a programmed cell death, is also lacking inflammatory reaction. These findings should be comprehensively analyzed in the pathologic evaluation.