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lüll Why, who and how should perform liver biopsy in chronic liver diseases Sporea I; Popescu A; Sirli RWorld J Gastroenterol 2008[Jun]; 14 (21): 3396-402Chronic viral hepatitis is a common disease in the general population. During chronic hepatitis, the prognosis and clinical management are highly dependent on the extent of liver fibrosis. The fibrosis evaluation can be performed by FibroTest (using serological markers), by Elastography or FibroScan (a noninvasive percutaneous technique using the elastic properties of the hepatic tissue) and by liver biopsy (LB), considered to be the "gold standard". Currently, there are three techniques for performing LB: percutaneous, transjugular and laparoscopic. The percutaneous LB can be performed blind, ultrasound (US) guided or US assisted. There are two main categories of specialists who perform LB: gastroenterologists (hepatologists) and radiologists, and the specialty of the individual who performs the LB determines if the LB is performed under ultrasound guidance or not. There are two types of biopsy needles used for LB: cutting needles (Tru-Cut, Vim-Silverman) and suction needles (Menghini, Klatzkin, Jamshidi). The rate of major complications after percutaneous LB ranges from 0.09% to 2.3%, but the echo-guided percutaneous liver biopsy is a safe method for the diagnosis of chronic diffuse hepatitis (cost-effective as compared to blind biopsy) and the rate of complications seems to be related to the experience of the physician and the type of the needle used (Menghini type needle seems to be safer). Maybe, in a few years we will use non-invasive markers of fibrosis, but at this time, most authorities in the field consider that the LB is useful and necessary for the evaluation of chronic hepatopathies, despite the fact that it is not a perfect test.|*Biopsy, Needle/adverse effects/instrumentation/methods[MESH]|*Patient Selection[MESH]|Biomarkers/blood[MESH]|Chronic Disease[MESH]|Clinical Competence[MESH]|Elasticity[MESH]|Equipment Design[MESH]|Hepatitis, Viral, Human/complications/metabolism/*pathology[MESH]|Humans[MESH]|Laparoscopy[MESH]|Liver Cirrhosis/metabolism/*pathology/virology[MESH]|Liver/chemistry/*pathology/virology[MESH]|Needles[MESH]|Severity of Illness Index[MESH]|Ultrasonography, Interventional[MESH] |