Chronic surgical infection
It includes chronic purulent and chronic specific infection.
Chronic purulent processes usually develop a second time from acute processes, such as osteomyelitis, pleurisy, wound suppuration, etc., proceeding with phases of exacerbation and remission. Most often occur when there are obstacles to healing in the outbreak of inflammation (sequesters, foreign bodies, poor outflow of wound, etc.).
Chronic specific processes. They are: a) surgical tuberculosis, b) actinomycosis, c) syphilis; d) surgical complications of leprosy. Each of these diseases is caused by a specific pathogen. Their common course is the development of a primary chronic process with a sluggish, unobtrusive beginning, which then leads to a significant disability. The ways of infection, the reaction of tissues and the whole organism for each of these diseases are specific, which greatly facilitates the diagnosis. For example, fistulae, contracture (immobility) sustasoi and muscle atrophy are typical for tuberculous damage to the joint. A woody density tumor with abrupt skin changes and the formation of fistulas that emit tiny pus usually indicates an actinomycosis lesion.
Recognition with greater certainty is confirmed by microscopic examination of a fistula discharge and histological analysis of a piece of tissue taken at a biopsy. They find characteristic for each disease tissue changes (granulomas).