Taking out a lymph node to look at it under the microscope. This is to see if it contains any cancer cells. It is a very small operation. It is normally done under a general anaesthetic, but you should be able to go home the same day.
a procedure in which all or part of a lymph node is removed and examined to determine if there is cancer within the node
a procedure that involves removing lymph tissue and examining it under a microscope for signs of infection or a disease such as cancer