A medical report that describes the characteristics of a tissue specimen that is taken from a patient. The pathology report is written by a pathologist, a doctor who has special training in identifying diseases by studying cells and tissues under a microscope. A pathology report includes identifying information (such as the patient’s name, birthdate, and biopsy date) and details about where in the body the specimen is from and how it was obtained. It typically includes a gross description (a visual description of the specimen as seen by the naked eye), a microscopic description, and a final diagnosis. It may also include a section for comments by the pathologist. The pathology report provides the definitive cancer diagnosis. It is also used for staging (describing the extent of cancer within the body, especially whether it has spread) and to help plan treatment.