A pathologist identifies and classifies different types of cancer by studying the appearance of cells and tissue. Many types of cancer can be identified by the appearance of their cells under a microscope. Pathologists are trained to examine blood cells, cancer cells, or other types of tissue. Some pathologists specialize in looking for genetic abnormalities that are associated with certain diseases or cancers. Pathology results are critical in determining the precise stage(extent) of disease or cancer.
A radiologist, also known as a diagnostic radiologist, is a doctor who uses medical imaging technology, such as x-rays, CT,MRI, or ultrasound, to examine internal organs and other structures. Radiologists interpret information from imaging tests to help make an accurate diagnosis for many types of cancer.