abscess /ab·scess/ (ab´ses) a localized collection of pus in a cavity formed by disintegration of tissues. 
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Cross section of abscess.
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Abscesses of breast.
amebic abscess one caused by Entamoeba histolytica, usually occurring in the liver but also in the lungs, brain, and spleen.
apical abscess a suppurative inflammatory reaction involving the tissues surrounding the apical portion of a tooth, occurring in acute and chronic forms.
appendiceal abscess , appendicular abscess one resulting from perforation of an acutely inflamed appendix.
Bezold's abscess one deep in the neck as a complication of acute mastoiditis.
brain abscess one affecting the brain as a result of extension of an infection (e.g., otitis media) from an adjacent area, or through bloodborne infection.
Brodie's abscess a roughly spherical region of bone destruction, filled with pus or connective tissue, usually in the metaphyseal region of long bones and caused by Staphylococcus aureus or S. albus.
cold abscess
1. one of slow development and with little inflammation.
diffuse abscess a collection of pus not enclosed by a capsule.
gas abscess one containing gas, caused by gas-forming bacteria such as Clostridium perfringens.
miliary abscess one of a set of small multiple abscesses.
Pautrier's abscess see under microabscess.
peritonsillar abscess one in the connective tissue of the tonsil capsule, from suppuration of the tonsil.
phlegmonous abscess one associated with acute inflammation of the subcutaneous connective tissue.
ring abscess a ring-shaped purulent infiltration at the periphery of the cornea.
shirt-stud abscess one separated into two cavities connected by a narrow channel.
stitch abscess one developed about a stitch or suture.
thecal abscess one arising in a sheath, as in a tendon sheath.
tuberculous abscess one due to infection with tubercle bacilli.
vitreous abscess an abscess of the vitreous humor of the eye due to infection, trauma, or foreign body.
wandering abscess one that burrows into tissues and finally points at a distance from the site of origin.
Welch's abscess gas a.
| ring abscess n. An acute purulent inflammation of the cornea which often progresses to panophthalmia. |
Ring Abscess
Cardiology A descriptive term for the histologic appearance of an abscess in infective endocarditis, which consists of a central focus of neutrophils, necrosis and bacteria, surrounded by fibroblasts and fibrosis, frayed cardiac muscle fibres and ‘round’ inflammatory cells—e.g., plasma cells and lymphocytes
Ophthalmology A rounded intracorneal abscess
Ophthalmology A rounded intracorneal abscess
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