abscess

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abscess,

localized inflamation associated with tissue necrosis. Abscesses are characterized by inflamation, which is due to the accumulation of pus in the local tissues, and often painful swelling. They occur in the skin, at the root of a tooth, in the middle ear, on the eyelid (see stysty,
in medicine, acute localized infection of one or more of the glands of the eyelid, with pain, swelling, and redness of the lid margin, usually caused by a staphylococcus infection. An external sty usually releases its pus and disappears in a day or so.
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), in the mammary glands, in the recto-anal area, and elsewhere in the body. Abscesses may develop in lung tissue, in the lymph nodes, and in bone. A sinus abscess may result in a fistulafistula
, abnormal, usually ulcerous channellike formation between two internal organs or between an internal organ and the skin. It may follow a surgical procedure with improper healing, or it may be caused by injury, abscess, or infection with penetration deep enough to reach
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, and abscess of the appendix in appendicitis. Unless an abscess discharges spontaneously, surgical incision and drainage is required. See boilboil
or furuncle
, tender, painful inflammatory nodule in the skin, which becomes pustular but with a hard center (see abscess). It may be caused by any of various microbes, the most usual being Staphylococcus aureus.
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; carbunclecarbuncle,
acute inflammatory nodule of the skin caused by bacterial invasion into the hair follicles or sebaceous gland ducts. It is actually a boil, but one that has more than one focus of infection, i.e., involves several follicles or ducts.
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.

Abscess

 

a localized purulent inflammation of tissues, involving their dissolution and the formation of a pus-containing cavity.

Abscesses may develop in the subcutaneous cellular tissue, in muscles, bones, and so forth, as well as in organs (such as the liver, lungs, spleen, and brain) or between them (interintestinal abscesses, subphrenic abscesses, and so on). Abscesses may appear either independently or as a complication in other diseases—for instance, pneumonia, trauma, etc. They develop as a result of the penetration of pyogenic microbes into the organism through lesions of the skin or the mucous membranes or as a result of importation of pathogenic agents from other purulent foci through the blood and lymph vessels. The microbes that have entered the tissues cause inflammation and subsequent necrosis of a section of tissue or organ. The abscess is surrounded by a zone of inflammation. The organism’s defense reaction is manifested in the formation of a capsule separating the abscess from healthy tissue. The volume of pus in the cavity of an abscess may reach several liters.

The manifestations of abscesses depend on their location, depth, and stage of development. Abscesses located close to the skin or to a mucous membrane cause their reddening, an increase in local and overall temperature, swelling, and fluctuation—a sensation of impulse transmission through a liquid from one wall to the other. When an abscess is deep, the function of the organ in which it is embedded is disturbed, body temperature rises, and pain sets in. The number of leukocytes in the blood and the erythrocyte sedimentation rate (ESR) increase. If the capsule becomes thin, the abscess will open up by itself through the skin or into the bronchial or intestinal lumen, etc. Serious complications develop when abscesses break open into the pleural or abdominal cavity. Abscesses are treated by surgery.

REFERENCES

Rufanov, I. G. Obshchaia khirurgiia, 6th ed. Moscow, 1957. Page 311.
Davydovskii, I. V. Obshchaia patologiia cheloveka. Moscow, 1961.

A. B. GALITSKII

abscess

[′ab·ses]
(medicine)
A localized collection of pus surrounded by inflamed tissue.

abscess

a localized collection of pus formed as the product of inflammation and usually caused by bacteria
References in periodicals archive ?
One patient with noncryptogenic pyogenic liver abscesses was also infected with a strain harboring phenotypic and genotypic characteristics of hypervirulent K.
Symptoms of pyogenic and amebic liver abscesses are similar and most commonly include fever and abdominal pain.
The remaining abscesses were diagnosed based on increased white blood cell count in the aspirated fluid but had negative findings on culture.
Clinical characteristics of the patients including age, gender, predisposing factors, the number of splenic abscesses, microbiological etiologies, treatment methods, and outcomes are shown in Table 1.
Most cases of patients with liver abscesses reported are among the elderly with the mean age of presentation of 63 years [7].
Herzon, "Permucosal needle drainage of peritonsillar abscesses: a five-year experience," Archives of Otolaryngology --Head and Neck Surgery, vol.
Recent case reports have described successful removal of a fish bone in the hypopharynx and drainage of retropharyngeal abscesses using a rigid curved laryngoscope [18, 19], which is useful for hypopharyngeal and oropharyngeal surgery.
reported favorable outcomes in patient treated with TUR which appears to be suitable for cases with multiple and diffuse prostatic abscesses or when aspiration does not show complete resolution of the fluid collection.
S0rensen, "Spinal epidural abscesses: conservative treatment for selected subgroups of patients," British Journal of Neurosurgery, vol.
The possibility of developing liver abscesses after TACE should be considered for patients experiencing abdominal pain, persistent fever that lasts ≥2 weeks (especially fever with a persistent body temperature of over 39[degrees]C) and chills, and imaging and laboratory tests that need to be timely performed to avoid a delay in diagnosis.[sup][5]
Its role in the development of invasive suppurative infections at various sites, including brain abscesses, has been described in multiple reports [4].