Does an anal fistula require surgery?

Written by Deng Heng

Colorectal Surgery

Updated on January 19, 2025

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The treatment of anal fistula mainly focuses on surgical treatment, with medication as a secondary support. This means that without surgery, an anal fistula essentially cannot heal. Non-conservative treatments for anal fistulas are only temporary symptomatic treatments that manage the condition and alleviate clinical symptoms. For example, during an acute attack of an anal fistula, anti-inflammatory drugs can be used to temporarily relieve symptoms such as pain. Therefore, surgery is necessary for anal fistulas, as surgical treatment can completely eradicate the source of the disease, addressing the internal and external origins of the fistula for a complete cure.

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Written by Yu Xu Chao

Colorectal Surgery

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What are the precautions after undergoing anal fistula surgery?

Because anal fistula surgery primarily involves removing the internal opening and the fistula tract, the postoperative wound is relatively large. Postoperative care mainly requires consistent dressing changes to ensure the wound drainage remains unobstructed, avoiding infection or false healing. Additionally, patients should develop good bowel habits, maintain smooth bowel movements, and avoid withholding stool. Otherwise, this may lead to dry, hard stools, causing severe pain during defecation or damaging the wound, which could result in bleeding or edema. In terms of diet, patients should choose foods rich in roughage to ensure smooth defecation and eat foods rich in high-quality protein to supplement the amino acids the body needs, promoting wound healing as much as possible. Moreover, after surgery, patients must use an anal wash or potassium permanganate solution for sitz baths. Since the postoperative wound is open and contaminated, changing dressings is especially important.

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Written by Chen Tian Jing

Colorectal Surgery

54sec

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Best treatment method for anal fistula abscess

The best treatment method for anal fistula and perianal abscess is surgical treatment, which is also the only curative method. Conservative treatment using drugs alone can only alleviate local inflammatory symptoms and cannot achieve complete cure. The main surgical method is the cutting and threading technique. This involves threading and ligating the infected area and the sphincter muscle. Through the slow cutting and drainage action of the ligature, the infection focus is removed while protecting the anal sphincter. Postoperatively, it is also important to pay attention to disinfecting and draining the local wound, ensuring proper dressing changes, and preventing poor drainage that could lead to infection or recurrence. It is advised that patients avoid spicy and irritating foods for the first six months after surgery.

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Written by Chen Tian Jing

Colorectal Surgery

1min 8sec

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Can people with anal fistula drink alcohol?

Patients with anal fistula are advised not to drink alcohol. As an anal fistula already features distinct external and internal openings as well as a fistulous tract, excessive or chronic alcohol consumption can stimulate recurrent local inflammatory episodes. This can cause an increase in the secretions from both openings, leading to varying degrees of anal pain and itching for the patient, worsening the condition, potentially increasing the branches of the fistula, or causing it to spread deeper or to other areas. Therefore, not only should patients with anal fistula abstain from alcohol, but they should also maintain a light diet rich in green vegetables and fruits. Once diagnosed, it is crucial for patients with anal fistula to undergo surgical treatment promptly. The primary surgical approach involves fistulotomy with seton placement. Postoperatively, attention must be paid to the dressing of the local wound to avoid pseudo-healing and infection.

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Written by Chen Tian Jing

Colorectal Surgery

1min 1sec

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What are the consequences of not treating an anal fistula?

If an anal fistula is not promptly treated with surgery, it may lead to an increase in the number of local branches or a thickening of the fistula wall. If the branches of the anal fistula extend to the ischiorectal fossa, it may also lead to pelvic infections. Moreover, if the anal fistula persists for a long time or if there is significant local inflammatory stimulation, it may even lead to cancerous changes in the fistula. Therefore, once an anal fistula is discovered and diagnosed, it is recommended to promptly undergo surgical treatment with fistulotomy and seton placement. Post-surgery, it is crucial to ensure thorough disinfection of the local wound, debridement, and dressing changes, which are very important for the recovery of the wound. This helps prevent pseudohealing, ensuring that the anal fistula heals completely and preventing recurrent episodes.

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Written by Yu Xu Chao

Colorectal Surgery

1min 11sec

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What are the consequences of not treating anal fistulas?

Since an anal fistula is caused by the infection and inflammation of the anal glands, it connects the rectum or anal canal with the skin around the anus, forming repeated abscesses, pain, and discharge of pus and blood around the anus. If an anal fistula is not treated, more fistula tracts will develop over time, and more of the muscles around the anus will become infected. This can even lead to high, complex anal fistulas, making surgical treatment later on more difficult and could easily lead to anal incontinence. Also, if an anal fistula is left untreated for a long time, there is the possibility of malignant transformation. Therefore, in clinical practice, it is recommended to undertake surgical treatment for anal fistulas as early as possible. The surgery for an anal fistula mainly involves the removal of the internal opening and the fistula tract, which is essential for a complete cure. Postoperatively, it is necessary to persist in changing dressings to avoid infection or pseudohealing at the wound site. Moreover, patients should be mindful of their diet.