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This is an accepted version of this page This is the latest accepted revision, reviewed on 14 October 2024. Fluid produced by inflammatory infection For other uses, see Pus (disambiguation). Medical condition Pus Eye with conjunctivitis exuding pus Specialty Infectious disease Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during ...
Malignant (or cancerous) pleural effusion is effusion where cancer cells are present. [11] It is usually classified as exudate. Types of exudates: serous, serosanguineous, sanguineous, hemorrhaging and purulent drainage. Serous: Clear straw colored liquid that drains from the wound. This is a normal part of the healing process.
Purulent sputum [5] contains pus, composed of white blood cells, cellular debris, dead tissue, serous fluid, and viscous liquid . Purulent sputum is typically yellow or green. It is seen in cases of pneumonia, bronchiectasis, lung abscess, or an advanced stage of bronchitis. [6]
The cyst wall is formed by proliferating capillaries, inflammatory cells, and gliosis (proliferating glial cells) in the case of brain and proliferating fibroblasts in the case of abscess cavities. Brain cells have a large amount of digestive enzymes (hydrolases). These enzymes cause the neural tissue to become soft and liquefy.
An ulcer is a sore on the skin or a mucous membrane, accompanied by the disintegration of tissue. Ulcers can result in complete loss of the epidermis and often portions of the dermis and even subcutaneous fat. Ulcers are most common on the skin of the lower extremities and in the gastrointestinal tract. An ulcer that appears on the skin is ...
The main immune cells active in the tissue are macrophages and neutrophils, although other leukocytes are also present. [6] These work to phagocytize old or damaged tissue, and protect the healing tissue from pathogenic infection. This is necessary both to aid the healing process and to protect against invading pathogens, as the wound often ...
The cytokines trigger an inflammatory response, which draws large numbers of white blood cells to the area and increases the regional blood flow. [26] The final structure of the abscess is an abscess wall, or capsule, that is formed by the adjacent healthy cells in an attempt to keep the pus from infecting neighboring structures.
Yellow adipose tissue in paraffin. White fat cells contain a single large lipid droplet surrounded by a layer of cytoplasm, and are known as unilocular. The nucleus is flattened and pushed to the periphery. A typical fat cell is 0.1 um in diameter [2] with some being twice that size, and others half that size.