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Wednesday 9 June 2004


Definition: Abscesses are localized collections of purulent inflammatory tissue caused by suppuration buried in a tissue, an organ, or a confined space. They are produced by deep seeding of pyogenic bacteria into a tissue.

Abscesses have a central region that appears as a mass of necrotic leukocytes and tissue cells. There is usually a zone of preserved neutrophils around this necrotic focus, and outside this region vascular dilation and parenchymal and fibroblastic proliferation occur, indicating the beginning of repair.

In time, the abscess may become walled off and ultimately replaced by connective tissue.


- An abscess is a collection of neutrophils.

Digital cases

- UI:989 : Pseudomonas abscesses of the kidney


- subcutaenous abcess
- pulmonary abcess
- hepatic abcess
- cerebral abcess
- pulmonary abcess
- subcutaneous abcess
- renal abcess
- peri-appendiceal abscess


- Peri-appendiceal abscess

See also

- nodal abscess / nodac abcess