Friction sounds in the liver area are caused by perihepatitis, or cancer cells invading the liver surface and adjacent peritoneum, which may become rough due to fibrinous exudate. Then, what are the examination methods of hepatic friction sounds? The following will explain it to you. The liver area friction sound examination method 1, check the right hand palm surface lightly against the liver area, let the patient do abdominal breathing action. There is no frictional sensation under the palm when it is normal. In perihepatitis, the surface of the liver and the adjacent peritoneum may become rough due to fibrinous exudate. The mutual friction between the two can be palpated by hand as a sense of friction in the hepatic region, and as described previously, a hepatic friction sound can also be heard on auscultation. Vascular murmur in the liver area and friction sounds in the liver area are signs of cirrhosis. 2.X-ray hepatic angiography is the most sensitive diagnostic imaging method for hepatocellular liver cancer, with an accuracy rate of 88%-93%. It can often make more accurate and rapid diagnosis for small hepatocellular carcinoma below 2cm. Since ultrasound can accurately display the location, depth and size of hepatocellular liver cancer nodules, biopsy or fine needle aspiration under ultrasound guidance for histological or cytological examination has been widely carried out at home and abroad in recent years to obtain the histological diagnosis of liver cancer. Under ultrasound surveillance, the movement of the puncture needle can be dynamically observed and the needle can be inserted purposefully to avoid the large vessels and organs near the puncture target.