This article is about the science of the cause and effect of diseases. A pathologist examines a tissue section for evidence of cancerous cells while robbins pathology free pdf download surgeon observes. The study of pathology, including the detailed examination of the body, including dissection and inquiry into specific maladies, dates back to antiquity. The advent of the microscope was one of the major developments in the history of pathology.
1,500 years in European medicine. With the new understanding of causative agents, physicians began to compare the characteristics of one germ’s symptoms as they developed within an affected individual to another germ’s characteristics and symptoms. This realization led to the foundational understanding that diseases are able to replicate themselves, and that they can have many profound and varied effects on the human host. To determine causes of diseases, medical experts used the most common and widely accepted assumptions or symptoms of their times, a general principal of approach that persists into modern medicine. By the late 1920s to early 1930s pathology was deemed a medical specialty. The information in this section mostly concerns pathology as it regards common medical practice in these systems, but each of these specialties is also the subject of voluminous pathology research as regards the disease pathways of specific pathogens and disorders that affect the tissues of these discrete organs or structures.