Anti-programmed cell death ligand 1-based immunotherapy in recurrent hepatocellular carcinoma with inferior vena cava tumor thrombus and metastasis: Three case reports

Figure 4 Computed tomography images of lung metastases and mediastinal lymph node metastases before and after immunotherapy. A and C: Acquired before immunotherapy showed the existence of lung metastases (arrows); B and D: Acquired after immunotherapy showed that the lung metastases had disappeared (arrows); E: Acquired before immunotherapy showed the existence of mediastinal lymph node metastases (white arrow); F: Acquired after immunotherapy showed that the mediastinal lymph node metastases became smaller (orange arrow).