Neoadjuvant radiotherapy combined with and without "T+A" regimen in the treatment of resectable hepatoma with portal vein cancer thrombolus : a prospective randomized controlled study

INTERVENTION: group A:Radical surgical excision after neoadjuvant radiotherapy combined with "T+A" regimen; group A:Radical surgical excision after neoadjuvant radiotherapy without "T+A" regimen; CONDITION: Hepatocellular carcinoma PRIMARY OUTCOME: Survival time; SECONDARY OUTCOME: Disease‐free survival time; INCLUSION CRITERIA: 1) Patients voluntarily joined the study and signed informed consent; 2). Between the ages of 18 and 75, regardless of gender; 3) The diagnosis was confirmed as primary hepatocellular carcinoma; 4) The primary liver tumor can be radically resected; Cheng's classification of portal vein cancer suppository (Type II/III); 5). Liver function Child A; 6) Functional tolerance surgery of vital organs. 7) Gastroscopy esophageal veins without severe varicosity, no active digestive tract ulcer. 8). Hemoglobin =90g/L, white blood cell count =3.0×10^9/L, neutrophil count =1.5×10^9/L, platelet count =60×10^9/L, no definite cachexia;