ABSTRACT
Introduction What is pathology? Pathology is the study of structural and functional abnormalities that are expressed as diseases of cells, organs, or organ systems. Clinical pathology applies the knowledge of such studies for the diagnosis of disease in an individual patient. A pathological diagnosis is generally based on the integration of clinical, macroscopic, (sub)microscopic, and in some cases genetic findings. Histopathology is the study of tissues from patients, whereas cytopathology is the study of cells that are retrieved by either fineneedle aspiration (FNA) or by brushing or scraping of cells. Furthermore, spontaneously shed cells in body fluids like urine can be examined.
