What is retroperitoneal lymph node biopsy by fine-needle aspiration?
A retroperitoneal lymph node biopsy by fine-needle aspiration is a procedure in which your healthcare provider takes a sample of your retroperitoneal lymph nodes. These are the lymph nodes at the back of your abdominal and pelvic cavity. When is it used? Your healthcare provider may suspect that your retroperitoneal lymph nodes may have cancer in them. Lymph nodes are oval-shaped organs found throughout the body that make cells called lymphocytes and monocytes, which are carried in the lymph fluid. The lymph nodes filter the lymph fluid, keeping bacteria and other organisms and substances out of the bloodstream. They may also trap cancer cells. However, they can also develop cancer themselves, a cancer called lymphoma. How do I prepare for a retroperitoneal lymph node biopsy by fine-needle aspiration? Follow instructions provided by your healthcare provider. What happens during the procedure? Your healthcare provider will inject a local anesthetic beneath the skin to keep you from feel
