Chronic surgical infection
It includes chronic suppurative and chronic specific infection.
Chronic purulent processes usually develop a second time from acute processes, such as, for example, osteomyelitis, pleurisy, suppuration of wounds, etc., proceeding with phases of exacerbation and remissions. Often occur when there are obstacles to healing in the focus of inflammation (sequestra, foreign bodies, poor outflow of wound discharge, 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. Common in their course is the development of a primarily chronic process with a sluggish, inconspicuous onset, which then leads to a significant disability. The pathways of infection, the reaction of tissues and the whole organism for each of these diseases are specific, which greatly facilitates the diagnosis. So, for example, fistulas, contracture (immobility), and muscle atrophy are typical for tuberculous lesions of the joint. A woody density tumor with abrupt changes in the skin and the formation of fistulas that secrete tiny pus usually indicates an actinomycosis lesion.
Recognition with greater reliability is confirmed by a microscopic examination of the fistula and histological analysis of a piece of tissue taken by biopsy. Tissue changes characteristic of each disease (granulomas) are found.