abscess

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.

Images

 An abscess is a collection of neutrophils.

• https://twitter.com/LinskeyKaty/status/720299532869701633
• https://twitter.com/JMGardnerMD/status/897272912280989698

Digital cases

 UI:989 : Pseudomonas abscesses of the kidney

Localizations

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

Videos

 Peri-appendiceal abscess

• http://www.youtube.com/v/qfpBseRkfC0

See also

 nodal abscess / nodac abcess