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1. A circumscribed collection of purulent exudate appearing in an acute or chronic localized infection, caused by tissue destruction and frequently associated with swelling and other signs of inflammation. 2. A cavity formed by liquefactive necrosis within solid tissue. [L. abscessus, a going away]
acute a. a recently formed a. with little or no fibrosis in the wall of the cavity.hot a;
alveolar a. an a. situated within the alveolar process of the jaws, most often caused by extension of infection from an adjacent nonvital tooth.dental a., dentoalveolar a., root a;
amebic a. an area of liquefaction necrosis of the liver or other organ containing amebae, often following amebic dysentery.tropical a;
apical a. 1. periapical a 2. an a. in the apex of the lung.
apical periodontal a. periapical a
appendiceal a. an intraperitoneal a., usually in the right iliac fossa, resulting from extension of infection in acute appendicitis, especially with perforation of the appendix.periappendiceal a;
Bartholin's a. an a. of the vulvovaginal gland.
Bezold's a. an a. deep in the neck parapharyngeal space associated with suppuration in the mastoid tip cells.
bicameral a. an a. with two separate cavities or chambers.
bone a. suppuration within the medullary cavity (osteomyelitis), cortex, or periosteum of bone.
Brodie's a. a chronic a. of bone surrounded by dense fibrous tissue and sclerotic bone.
bursal a. suppuration within a bursa.
caseous a. an a. containing white solid or semisolid material of cheesy consistency; usually tuberculous. See also cheesy a.
cheesy a. an a. that contains necrotic tissue with a cheese-like consistency; typically seen in tuberculosis.
cholangitic a. (ko-lan-jI´-tik) a focal area of pus formation in the liver resulting from infection arising in the biliary tract.
chronic a. a long-standing collection of pus surrounded by fibrous tissue.
cold a. 1. an a. without heat or other usual signs of inflammation; 2. tuberculous a
collar-button a. an a. consisting of two cavities connected by a narrow isthmus, usually formed by rupture of an a. through a fascial layer in the hand or foot.shirt-stud a;
crypt a.'s a.'s in crypts of Lieberkühn of the large intestinal mucosa; a characteristic feature of ulcerative colitis.
dental a. , dentoalveolar a. alveolar a
diffuse a. a collection of pus not circumscribed by a well-defined capsule.
Douglas a. suppuration in Douglas pouch.
dry a. the remains of an a. after the pus is absorbed.
Dubois' a.'s small cysts of the thymus containing polymorphonuclear leukocytes but lined by squamous epithelium; reported in congenital syphilis but also found in the absence of syphilis.Dubois' disease, thymic a.'s;
embolic a. an a. arising at the point of arrest of a septic embolus.
fecal a. stercoral a
follicular a. an a. in a hair, tonsillar, or other follicle.
gas a. an a. containing gas caused by Enterobacter aerogenes, Escherichia coli, or other gas-forming microorganisms.
gingival a. an a. confined to the gingival soft tissue.gumboil, parulis;
gravitation a. perforating a
gummatous a. an a. due to the softening and breaking down of a gumma, especially in bone.syphilitic a;
hematogenous a. an a. caused by blood-borne organisms.
hot a. acute a
hypostatic a. perforating a
ischiorectal a. an a. involving the tissues in the ischiorectal fossa.
lacunar a. an a. involving the urethral lacunae.
lateral alveolar a. an alveolar a. located along the lateral root surface of a tooth.pericemental a;
lateral periodontal a. an a. that forms at the depth of a periodontal pocket due to multiplication of pyogenic microorganisms or the presence of foreign material.
mastoid a. an a. of the mastoid air cells.
metastatic a. a secondary a. formed, at a distance from the primary focus, as a result of the transportation of pyogenic bacteria by the lymph or bloodstream.
migrating a. perforating a
miliary a. one of a number of minute collections of pus, widely disseminated throughout an area or the whole body.
Munro's a. Munro's microabscess
orbital a. a circumscribed collection of pus within the orbit; frequently an extension of purulent infection of the paranasal sinuses, usually the ethmoids.retrobulbar a;
otic a. a cerebral a. usually involving the temporal lobe or cerebellar hemisphere, due to extension of suppuration of the middle ear.otogenous a;
otogenous a. otic a
palatal a. 1. a lateral periodontal a. associated with the lingual surface of a maxillary tooth; 2. an alveolar a. that has eroded the cortical plate, allowing extension into the palatal soft tissues.
pancreatic a. an a. in the pancreatic or peripancreatic area usually related to pancreatitis.
parafrenal a. an a. that occurs on either side of the frenum of the penis.
parametric a. , parametritic a. an a. in the connective tissue of the broad ligament of the uterus.
paranephric a. an a. in the region of the kidney, outside the renal fascia.
parotid a. rapidly progressive suppuration in the parotid gland; a complication of parotitis.
Pautrier's a. Pautrier's microabscess
pelvic a. an a. in the pelvic peritoneal cavity, developing as a complication of diffuse peritonitis or of localized peritonitis associated with abdominal or pelvic inflammatory disease, such as salpingitis; the pus frequently collects in the rectovesical or rectouterine pouch.
perforating a. an a. that breaks down tissue barriers to enter adjacent areas.gravitation a., hypostatic a., migrating a., wandering a;
periapical a. an alveolar a. localized around the apex of a tooth root.apical a. (1) , apical periodontal a;
periappendiceal a. appendiceal a
periarticular a. an a. surrounding a joint, not necessarily involving it.
pericemental a. lateral alveolar a
pericoronal a. an a. developing in the inflamed dental follicular tissue overlaying the crown of a partially erupted tooth.
perinephric a. an a. within Gerota's fascia but outside the renal capsule.
periodontal a. an alveolar a. or a lateral periodontal a.
perirectal a. an a. in connective tissue adjacent to the rectum or anus.
peritonsillar a. extension of tonsillar infection beyond the capsule with abscess formation usually above and behind the tonsil.
periureteral a. an a. surrounding the ureter.
periurethral a. an a. involving the tissues around the urethra.
phlegmonous a. circumscribed suppuration characterized by intense surrounding inflammatory reaction which produces induration and thickening of the affected area.
Pott's a. tuberculous a. of the spine.
premammary a. an a. in the subcutaneous tissue covering the mammary gland.
psoas a. an a., usually tuberculous, originating in tuberculous spondylitis and extending through the iliopsoas muscle to the inguinal region.
pulp a. an a. involving the soft tissue within the pulp chamber of a tooth, usually a sequela of caries or less frequently of trauma.
pyemic a. a hematogenous a. resulting from pyemia, septicemia, or bacteremia.septicemic a;
radicular a. alveolar a., an a. around a tooth root.
residual a. an a. recurring at the site of a former a. resulting from persistence of microbes and pus.
retrobulbar a. orbital a
retrocecal a. an a. located posterior to the cecum, usually resulting from perforation of a retrocecal appendix.
retropharyngeal a. an a. arising, usually, in retropharyngeal lymph nodes, most commonly in infants.
ring a. an acute purulent inflammation of the corneal periphery in which a necrotic area is surrounded by an annular girdle of leukocytic infiltration.
root a. alveolar a
satellite a. an a. closely associated with a primary a.
septicemic a. pyemic a
shirt-stud a. collar-button a
stellate a. a star-shaped necrotic area surrounded by histiocytes, seen within swollen inguinal lymph nodes in lymphogranuloma venereum.
stercoral a. a collection of pus and feces.fecal a;
sterile a. an a. whose contents are not caused by pyogenic bacteria.
stitch a. an a. around a suture.
subdiaphragmatic a. subphrenic a
subepidermal a. a microscopic a. located in the dermis just beneath the epidermis.
subhepatic a. an a. located immediately beneath the liver.
subperiosteal a. an a. between the periosteum and cortical plate of the bone.
subphrenic a. an a. directly beneath the diaphragm.subdiaphragmatic a;
subungual a. suppuration extending beneath a fingernail or toenail, usually from a parenychia.
sudoriparous a. a collection of pus in a sweat gland.
syphilitic a. gummatous a
thecal a. suppuration in a sheath or capsule.
thymic a.'s Dubois' a.'s
Tornwaldt's a. chronic infection of the pharyngeal bursa. See also Tornwaldt's syndrome.
tropical a. amebic a
tuberculous a. an a. caused by the tubercle bacillus.cold a. (2);
tubo-ovarian a. a large a. involving a uterine tube and an adherent ovary, resulting from extension of purulent inflammation of the tube.
verminous a. worm a
wandering a. perforating a
worm a. a. due to parasitic worms or in which worms are found.verminous a;
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