For example, tissue obtained from a colon cancer operation is examined by pathologists to determine whether the edges of the surgical incisions are tumor-free and how far the tumor has spread especially in the area of the lymph nodes: If the lymph nodes are affected, chemotherapy is also necessary.
This is similar to the treatment of certain thyroid, lung, laryngeal, breast, stomach, skin, bladder, prostate, testicular, ovarian and other cancers. The pathologist's report provides substantial help in deciding on further therapy.
The invisible becomes visible: Under the pathologist's microscope!