Conversion hepatectomy for hepatocellular carcinoma with main portal vein tumour thrombus after lenvatinib treatment: A case report

Figure 4 Macroscopic and microscopic findings of the main tumour and the portal vein tumour thrombus. A: A white to brownish nodule was found in the left portal vein (arrows). Inlet: close-up picture of the removed portal vein tumour thrombus; B: The primary lesion showed severe fibrotic change with haemosiderin deposition. In the fibrosis, the viable tumour cell nests (arrow) and the necrotic tumour lesions (arrowhead) were scattered; C: High magnification demonstrated moderately to poorly differentiated tumour cells; D: Most of the portal vein tumour thrombus showed necrotic changes.