Symptoms: Early stage hepatocellular carcinoma often has no specific symptoms, while the symptoms of middle and late stage hepatocellular carcinoma are more common. Signs: Early stage hepatocellular carcinoma often has no obvious positive signs or only resembles the signs of cirrhosis. In middle and late stage liver cancer, signs such as liver enlargement, jaundice and ascites usually appear. In addition, liver palms, spider nevus, enlarged male breast and lower limb edema are often seen in combined cirrhosis. When extrahepatic metastasis occurs, the corresponding signs of each metastatic site may appear. Complications: common ones include upper gastrointestinal bleeding, hepatocellular carcinoma rupture bleeding, hepatic and renal insufficiency, etc. Primary hepatocellular carcinoma examination: 1. Ultrasound examination can show the size, shape and location of the tumor, as well as the presence of cancer thrombus in the hepatic vein or portal vein. 2. CT examination has a high resolution and the diagnostic rate can reach more than 90%, and can detect microscopic cancer foci with a diameter of about 25px. 3. The diagnostic value of MRI is similar to that of CT, and it is better than CT in differentiating benign and malignant intrahepatic occupying lesions, especially hemangioma. 4.Selective abdominal artery or hepatic arteriography For carcinoma with abundant blood vessels, the low resolution is about 25px, and the positive rate for small hepatocellular carcinoma <50px< span=""> can reach 90%. 5.Liver aspiration cytology by needle aspiration Fine needle aspiration under B-type ultrasound or CT guidance can help to improve the positive rate.