| periappendiceal abscess | An intraperitoneal abscess, usually in the right iliac fossa, resulting from extension of infection in acute appendicitis, especially with perforation of the appendix. Synonym: periappendiceal abscess. (05 Mar 2000) |
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| periarticular abscess | An abscess surrounding a joint, not necessarily involving it. (05 Mar 2000) |
| cheesy abscess | An abscess that contains necrotic tissue with a cheese-like consistency; typically seen in tuberculosis. (05 Mar 2000) |
| pericemental abscess | An alveolar abscess located along the lateral root surface of a tooth. Synonym: pericemental abscess. (05 Mar 2000) |
| pericoronal abscess | An abscess developing in the inflamed dental follicular tissue overlaying the crown of a partially erupted tooth. (05 Mar 2000) |
| perinephric abscess | An abscess within Gerota's fascia but outside the renal capsule. (05 Mar 2000) |
| periodontal abscess | Localised circumscribed purulent area of inflammation in the periodontal tissue. It is a derivative of marginal periodontitis and commonly associated with suprabony and infrabony pockets and interradicular involvements, in contrast to periapical abscess which is attributable to pulp necrosis. (12 Dec 1998) |
| gravitation abscess | An abscess that breaks down tissue barriers to enter adjacent areas. Synonym: gravitation abscess, hypostatic abscess, migrating abscess, wandering abscess. (05 Mar 2000) |
| perirectal abscess | An abscess in connective tissue adjacent to the rectum or anus. (05 Mar 2000) |
| peritonsillar abscess | An abscess in the peritonsillar tissue extending into the tonsil capsule, resulting from suppuration of the tonsil. (12 Dec 1998) |
| periureteral abscess | An abscess surrounding the ureter. (05 Mar 2000) |
| periurethral abscess | An abscess involving the tissues around the urethra. (05 Mar 2000) |
| ring abscess | An acute purulent inflammation of the corneal periphery in which a necrotic area is surrounded by an annular girdle of leukocytic infiltration. (05 Mar 2000) |
| cholangitic abscess | A focal area of pus formation in the liver resulting from infection arising in the biliary tract. (05 Mar 2000) |
| metastatic abscess | A secondary abscess formed, at a distance from the primary focus, as a result of the transportation of pyogenic bacteria by the lymph or bloodstream. (05 Mar 2000) |