Which of the following liver tumour has a propensity to invade the poal or hepatic vein ?
Ans. is 'b' i.e., Hepatocellular carcinoma Robbins states "All patterns of hepatocellular carcinoma have a strong propensity for invasion of vascular channels. Extensive intrahepatic metastasis ensues and occasionally long snake like masses of tumour invade the poal vein or inferior venacava, extending even into the right side of the hea". All other options given in the question are benign tumours of the liver and they neither invade the adjacent structures, nor do they metastasize to distant sites.
Cavernous hemangioma
Hepatocellular carcinoma
Focal nodular hyperplasia
Hepatic adenoma