perianal abscess

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Related to perianal abscess: perirectal abscess, perianal fistula


a localized collection of pus in a cavity formed by the disintegration of tissue. Abscesses are usually caused by specific microorganisms that invade the tissues, often by way of small wounds or breaks in the skin. An abscess is a natural defense mechanism in which the body attempts to localize an infection and wall off the microorganisms so that they cannot spread throughout the body. As the microorganisms destroy the tissue, an increased supply of blood is rushed to the area. The cells, bacteria, and dead tissue accumulate to form a clump of cream-colored liquid, which is the pus. The accumulating pus and the adjacent swollen, inflamed tissues press against the nerves, causing pain. The concentration of blood in the area causes redness. The abscess sometimes “comes to a head” by itself and breaks through the skin or other tissues, allowing the pus to drain. Local applications of heat may be used to facilitate localization and drainage.
Abscess, cross section.
alveolar abscess a localized suppurative inflammation of tissues about the apex of the root of a tooth.
amebic abscess an abscess cavity of the liver resulting from liquefaction necrosis due to entrance of Entamoeba histolytica into the portal circulation in amebiasis; amebic abscesses may also affect the lungs, brain, and spleen.
Bartholin abscess acute infection of a Bartholin gland with symptoms including pain, swelling, cellulitis of the vulva, and dyspareunia. Treatment is incision and drainage of the abscess. Cultures should be obtained to rule out infections by Neisseria gonorrhoeae or Chlamydia.
Bezold's abscess one deep in the neck resulting from a complication of acute mastoiditis.
brain abscess see brain abscess.
Brodie's abscess a circumscribed abscess in bone, caused by hematogenous infection, that becomes a chronic nidus of infection.
cold abscess one of slow development and with little inflammation, usually tuberculous.
diffuse abscess an uncircumscribed abscess whose pus is diffused in the surrounding tissues.
gas abscess one containing gas, caused by gas-forming bacteria such as Clostridium perfringens. Called also Welch's abscess.
miliary abscess one composed of numerous small collections of pus.
pancreatic abscess one that occurs as a complication of acute pancreatitis or postoperative pancreatitis caused by secondary bacterial contamination.
perianal abscess one beneath the skin of the anus and the anal canal.
periapical abscess inflammation with pus in the tissues surrounding the apex of a tooth.
periodontal abscess a localized collection of pus in the periodontal tissue.
peritonsillar abscess a localized accumulation of pus in the peritonsillar tissue subsequent to suppurative inflammation of the tonsil; called also quinsy.
phlegmonous abscess one associated with acute inflammation of the subcutaneous connective tissue.
stitch abscess one developed about a stitch or suture.
thecal abscess one in the sheath of a tendon.
wandering abscess one that burrows into tissues and finally points at a distance from the site of origin.
Welch's abscess gas abscess.

perianal abscess

Etymology: Gk, peri, around; L, anus + abscedere, to go away
a focal, purulent, subcutaneous infection in the region of the anus. Treatment includes hot soaks, antibiotics, and possibly incision and drainage. If a rectal fistula or perianal space is found to be the cause of recurrent perianal abscesses, surgical excision is usually performed.

per·i·a·nal ab·scess

(per'ē-ā'năl ab'ses)
An infection of the soft tissues surrounding the anal canal, with formation of a discrete abscess cavity.


around the anus.

perianal abscess
under the skin outside the anal canal. Causes sufficient pain to inhibit defecation.
perianal fistula
a syndrome of inflammation, ulceration, and draining sinuses and fistulae in the perianal region of dogs, particularly German shepherd dogs. The specific lesions include fistulae of the anal sinuses, anal sac rupture and fistulae, submucous fistulae and sinuses and fistulae of the rectum. Clinical signs include painful defecation and unpleasant odor. A variety of surgical techniques have been developed, but the condition is very resistant to treatment. Called also anal furunculosis.
perianal gland
modified sebaceous glands found in skin around the anus of dogs. Other regions also contain modified glands, e.g. the perineum, prepuce, thigh, dorsal lumbosacral area and tail base. Called also circumanal glands, hepatoid glands.
perianal gland hyperplasia
most perianal gland enlargements in male dogs are hormone-dependent hyperplasia and regress when the patient is castrated.
perianal gland tumors
nodular hyperplasia, adenomas and carcinomas are common in older male dogs, occurring occasionally in females.
perianal pyoderma
see perianal fistula (above).
perianal sinus
see perianal fistula (above).
perianal warts
papilloma around anus, virus possibly transmitted by veterinarian performing rectal examination.
References in periodicals archive ?
Her symptoms were ultimately the result of a perianal abscess which was treated operatively.
Out of the 10 cases with perianal abscess, loop colostomy was performed in 4 (23.
Past history of Perianal abscess was the presenting complaint in 84% of patients.
Discharging sinus is the commonest mode of presentation 72% and pain 72% and 84% pass history of perianal abscess was the presenting symptoms.
He com- plained of anal pain for a couple of days and was diagnosed with perianal abscess, followed by inci- sion and drainage of perianal abscess at a suburban clinic.
The patient was diagnosed with FG on the basis of his perineal and scrotal ne- crotizing fasciitis and perianal abscess.
He first had abdominal and perineal pain for 10 days, and was treated with the perianal debri- dement and drainage for his perianal abscess at a local clinic.
The findings usually vary from fissure in Ano, fistula in Ano, hemorrhoids, perianal abscess, perianal hematoma, sentinel tag of skin, anal carcinoma, anal warts, anal polyps, rectal carcinoma, and prolapse rectum.
Regarding the duration of symptoms for perianal abscess, the duration was least as the patient had fever and severe pain.
The differential diagnosis of sacrococcygeal pilonidal disease includes furuncle, hidradenitis suppurativa, fistula-in-ano, perianal abscess, sacral osteomyelitis with draining sinus, tuberculosis, and actinomycosis.