Fine needle biopsy
This method uses a very thin needle to collect tissues from the lymph node or tumor. This procedure is also known as Fine Needle Aspiration (FNA). This procedure does not require any surgery, but sometimes the needle cannot collect sufficient tissues for further diagnostic tests. If the tumor is located deep in the body, then the needle can also be guided by watching on a computer using a CT scan technique.
Core Needle Biopsy
This procedure is similar to Fine needle biopsy, but it uses a large needle and syringe to remove a large sample size.