Overview of Pathology
Definitions The study of the essential nature of disease, including symptoms/signs, patho-genesis, complications, and morphologic consequences including structural and functional alterations in cells, tissues, and organs The study of all aspects of the disease process focusing on the pathogenesis leading to classical structural changes (gross and histopathology) and molecu-lar alterations The etiology (cause) of a disease may be genetic or environmental. The pathogen-esis of a disease defines the temporal sequence and the patterns of cellular injurythat lead to disease. Morphologic changes of the disease process include both gross changes and microscopic changes. The clinical significance of a disease relates to its signs and symptoms, disease course including complications, and prognosis. Methods Used Gross examination of organs on exam questions has 2 major components: identify-ing the organ and identifying the pathology. Useful gross features include consid-eration of