| UL | ultrasonic; Underwriters Laboratories; undifferentiated lymphoma; upper limb; upper limit; upper lob... |
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| ULPE | upper lobe pulmonary edema |
| paranephric abscess | An abscess in the region of the kidney, outside the renal fascia. (05 Mar 2000) |
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| verminous abscess | Abscess due to parasitic worms or in which worms are found. Synonym: verminous abscess. (05 Mar 2000) |
| parotid abscess | Rapidly progressive suppuration in the parotid gland; a complication of parotitis. (05 Mar 2000) |
| mastoid abscess | An abscess of the mastoid air cells. (05 Mar 2000) |
| caseous abscess | An abscess containing white solid or semisolid material of cheesy consistency; usually tuberculous. See: cheesy abscess. (05 Mar 2000) |
| gingival abscess | An abscess confined to the gingival soft tissue. Synonym: gumboil, parulis. (05 Mar 2000) |
| Pautrier's abscess | A microscopic lesion in the epidermis, seen in mycosis fungoides; it is composed of the same type of atypical mononuclear cells as those that form the infiltrate in the corium. Synonym: Pautrier's abscess. (05 Mar 2000) |
| residual abscess | An abscess recurring at the site of a former abscess resulting from persistence of microbes and pus. (05 Mar 2000) |
| pelvic abscess | An abscess in the pelvic peritoneal cavity, developing as a complication of diffuse peritonitis or of localised peritonitis associated with abdominal or pelvic inflammatory disease, such as salpingitis; the pus frequently collects in the rectovesical or rectouterine pouch. (05 Mar 2000) |
| retrobulbar abscess | A circumscribed collection of pus within the orbit; frequently an extension of purulent infection of the paranasal sinuses, usually the ethmoids. Synonym: retrobulbar abscess. (05 Mar 2000) |
| retrocaecal abscess | An abscess located posterior to the caecum, usually resulting from perforation of a retrocaecal appendix. (05 Mar 2000) |
| retropharyngeal abscess | A soft tissue infection of the throat with entry usually by the pharynx but sometimes as an extension of a lateral neck infection resulting from a neck injury. The major risk is upper airway obstruction caused by pharyngeal swelling. (daniel r. Masys, from a written communication) (12 Dec 1998) |
| perforating abscess | An abscess that breaks down tissue barriers to enter adjacent areas. Synonym: gravitation abscess, hypostatic abscess, migrating abscess, wandering abscess. (05 Mar 2000) |
| perianal abscess | <surgery> An abscess that forms adjacent to the anal opening. Symptoms include a tender swelling adjacent to the anus and pain on defecation. (27 Sep 1997) |
| periapical abscess | <dentistry> Acute or chronic inflammation of tissues surrounding the apical portion of a tooth, associated with the collection of pus, resulting from infection following pulp infection through a carious lesion or as a result of an injury causing pulp necrosis. (12 Dec 1998) |