Perianal cyst

Introduction The perianal cyst is mostly caused by the anal gland infection spreading outward through the lower part of the external sphincter, often located in the lower part of the anus or lateral skin, generally not large. The main symptoms are continuous perianal pain in the perianal area, inconvenient movement, restlessness, and no obvious systemic infectious symptoms. The lesion is obviously red and swollen, with induration and tenderness. The formation of abscess can have a sense of fluctuation, and pus is taken out during puncture.

Cause

First, infectious factors

Modern medicine believes that infection is the main cause of this disease.

1, due to anal fissure, hemorrhoids, anal sinusitis, skin around the anus hair follitis and skin disease around the anus, can form an anorectal abscess around the anus.

2, there are certain diseases such as ulcerative colitis, aplastic anemia, systemic malnutrition, etc., so that the body is weak, the resistance is reduced, and the abscess around the anus is induced.

Second, iatrogenic factors

Clinically, iatrogenic anal abscess around the rectum is not uncommon.

1, internal sputum sputum sputum therapy, due to improper operation or unclean infection caused by submucosal abscess.

2, injection of chemical drugs around the rectum, causing tissue necrosis, resulting in abscess around the rectum.

Third, postoperative factors

Clinically, an anorectal infection can also be seen, and the formation of peri-abdominal abscess, as well as urethral infection, perineal infection, postpartum perineal rupture and suture infection, postoperative infection of sacral osteomyelitis and other abscesses.

Fourth, other

Such as guns, knife wounds, infection after foreign body injury in the rectum, lymphogranuloma, actinomycosis, rectal diverticulitis infection, anorectal cancer rupture or deep infection, and weak, low resistance, or suffering Chronic wasting disease, or malnutrition, is the cause of an anorectal abscess.

an examination

Related inspection

Anal reflex anus examination anus

Methods for examination of perianal cysts:

1. Touch method.

2. Probe inspection.

3, interventional method, low position incision high latex tube drainage method.

4, hydrogen peroxide perfusion method, hydrogen peroxide perfusion method to adapt to a variety of sputum, especially high complex anal fistula.

METHODS: Three to four dry cotton balls were placed over the internal tooth line of the rectum under a horn-type anoscope to prevent hydrogen peroxide from flowing into the rectal cavity to cauterize the intestinal mucosa. Connect the needle tube with hydrogen peroxide to a small plastic tube and insert it into the outer mouth of the anal fistula. Press the outer mouth with gauze moderately, and slowly push it from the outer mouth into the tube. Under the anoscope, white foam will flow out from the inner mouth.

Differential diagnosis

Differential diagnosis of perianal cysts:

1, anal fissure: anal fissure is a small ulcer formed after the sclerosing of the anal canal skin layer below the dentate line. Its direction is parallel to the longitudinal axis of the anal canal. It is about 0.5~1.0cm long. It is usually fusiform or oval, causing severe pain. It is difficult to heal. The anal canal surface laceration can not be regarded as anal fissure due to rapid self-healing, and often asymptomatic. Anal fissure is a common anal canal disorder and a common cause of severe pain in the anal canal in young and middle-aged people. Anal fissure is most common in middle-aged people, but it can also occur in the elderly and children. The average male is slightly more than female, but there are also reports of more women than men. Anal fissure often occurs in the back of the anus, in the middle of the front, mostly in the back of the anus, and less on both sides. From the beginning, there is only a small gap in the skin of the anal canal, sometimes it can be split into the subcutaneous tissue or until the shallow layer of the sphincter. The slit is linear or prismatic. If the anus is opened, the wound surface of the breach is round or elliptical.

2, perianal skin flushing: perianal skin flushing is more common in the acute phase of perianal eczema, perianal eczema is a common non-infectious skin disease, lesions are mostly confined to the skin around the anus, and occasionally spread to the buttocks, perineum and Clitoris, local rash, erythema, erosion, exudation, scarring, scaling, acute eczema generally followed by flushing - papules (potted rash) - blister (exudation) - erosion - crusting (scaly) - pigmentation This process is accompanied by itching.

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