The Micropathology of common conditions like inflammation, infection, hypertrophy, infarction and atrophy will be discussed. Organisms of clinical surgical importance will be discussed as well as sterilization and asepsis. Diseases ranging from simple obstruction to malignant lesions of the bowel, liver, pancreas and the effects of resection will be discussed as well as the important investigation used in clinical Surgery.Diseases of the heart and vessel in general or vessels of a particular organ like the heart or kidney will be discussed with emphasis on clinical examples like the diabetic foot, stroke and renal hypertension. Conditions like anoxia while under a general anaesthetic, aspiration, and obstructive airway disease and tension pneumothorax will be discussed. Objectives: