病理学课件：炎症（英文版）.pptVIP

. The formation of multiple small ( 2 cm) abscesses is occasionally referred to as necrotizing pneumonia or lung gangrene. Abscesses occur when an area of tissue becomes infected and the body is able to wall off the infection to keep it from spreading. Abscesses can form in almost every part of the body and may be caused by infectious organisms, parasites, and foreign materials. Abscesses in the skin are readily visible and are red, raised, and painful. Abscesses in other areas of the body may not be obvious, but if they involve vital organs they may cause significant damage. A sterile abscess can be defined as a localized swelling filled with fluid where no organism growth is obtained on culture. * A pus-making skin infection in a gland or hair gland (follicle). It is marked by pain, redness, and swelling. Tissue death in the center of the swollen area forms a core of matter that will be released, reabsorbed, or surgically removed. To prevent spread of infection it is important to avoid irritating or squeezing the sore. Treatment may include antibiotics, local moist heat, and cutting and draining Cutaneous or skin and soft tissue abscesses commonly associated with staphylococcus aureus. Staphylococcal strains may show rapid necrosis, and early suppuration, with a large amount of pus. It liberates lethal cellular toxins, but is more able to be quickly walled off by surrounding tissue before it can spread. * In a severe infection, multiple boils may develop and the patient may experience fever and swollen lymph nodes. * tender firm indurated erythematous subcutaneous fluctuant mass studded with draining pustules A group of boils could fuse into a carbuncles.Deep infection of several contiguous follicles. A carbuncle is a group of boils that show deep infection of contiguous follicles with Staphylococcus aureus. * The structure of the tooth includes dentin, pulp and other tissues, blood vessels and nerves imbedded in the bony jaw. Above the gum line, the toot