Pathology is the branch of medicine that investigates the origins, mechanisms, progression, and outcomes of disease and disease treatments. Pathology has an influence on almost any other medical discipline. A pathologist is a doctor who analyses specimens and verifies the results of laboratory experiments. A pathologist plays a critical part in a patient's health treatment. Various laboratory examinations are performed on patient samples of pathology to aid in the identification and care of the patient. Pathologists are physicians and scientists who specialise in disease and sickness.