percutaneous biopsyPercutaneous biopsies, or needle biopsies are tests performed by interventional radiologists to identify the nature of a lump, mass, or other abnormal tissue inside the body. The doctor inserts a small needle, guided by X-ray or other imaging techniques, into the target area.  A small sample is removed and given to a pathologist who analyzes it to determine whether the abnormality is cancerous, a benign tumor, infection, or scar tissue.  These are rapid, minimally invasive procedures that make surgery unnecessary for a majority of patients. The image-guided biopsies are performed under local anesthetic with no need for conscious sedation using a small incision that requires no stitches to close.