<s>[INST] My father is 78 year old ,diabetic .During the utra sound scanning it has been noted a tumour of size 5cm X 3cm in the lever slightly pushing the nerves .But the alphaprotein test has found negetive,The doctor is asking to carry out a biopsy of lever.As one of the kidney is smaller in size Ct scan is less sugetive.this tumour has developed may be witin 6 monts as earlier scanning reports befor 6 months,no indication regarding this tumour.Is it necessary to carry out a biopsy ,may be this will lead in to bleeding .Is this tumour can be canceruos.Awating reply [/INST] It is necessary surely to carry out a biopsy. This tumor can be a hepatic cancer, but can be also a metastasis from other type of cancer. The biopsy can lead in to bleeding, but this is not a reason not to perform this investigation. I did not understand what you meant by "as one of the kidney is smaller in size Ct scan is less suggestive". </s>