Anal Abscesses: Do They Always Lead to Fistulas? - Surgery

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Anal fistula


Hello Dr.
Ke: I would like to ask if an anal abscess will definitely develop into an anal fistula.
I experienced significant pain in my buttocks before the Lunar New Year and finally visited a clinic on the third day of the new year.
The doctor diagnosed it as a fistula, but after an internal examination and drainage of the pus, the pain subsided.
It has been many days since, and I have not felt any other discomfort.
The clinic does not accept health insurance, but the doctor keeps insisting that I need to undergo a ligation procedure, which will take six weeks.
I have read many accounts of people experiencing severe pain after the surgery, and I am very scared and anxious.
I would greatly appreciate your clarification on this matter.
Thank you very much.

A-Hua, 50~59 year old female. Ask Date: 2016/02/15

Dr. Ke Fangxu reply Surgery


Not necessarily; about half of the patients may develop a fistula.
If the symptoms do not recur, it may be advisable to continue monitoring.
Be cautious with clinics that do not have health insurance contracts.
The ligation technique is generally used for patients with complex anal fistulas, and the pain associated with it can be greater than that of standard surgical methods.
It is recommended that you consult a specialist in colorectal surgery, as they will provide more professional and objective advice.

Reply Date: 2016/02/15

More Info


Anal abscesses and their potential progression to fistulas are important topics in colorectal health. An anal abscess is a localized collection of pus that occurs in the tissue surrounding the anus, often resulting from an infection of the anal glands. The question of whether an anal abscess will always lead to a fistula is a common concern among patients.

To clarify, not all anal abscesses will develop into fistulas. A fistula is an abnormal connection between the anal canal and the skin surrounding the anus, which can occur if an abscess does not heal properly. When an abscess forms, it can either drain spontaneously or be surgically drained, which often alleviates the pain and resolves the infection. If the abscess is adequately treated and the infection is cleared, it may heal without forming a fistula. However, if the abscess is deep or if there is significant tissue damage, there is a higher risk that a fistula may develop.

In your case, it seems that the abscess was drained effectively, and you are no longer experiencing pain. This is a positive sign, as it indicates that the infection may have resolved. The absence of further discomfort is also encouraging, suggesting that the tissue is healing properly. However, it is essential to monitor for any signs of recurrence or complications, such as persistent drainage, pain, or changes in bowel habits.

Regarding the treatment options, the method of "埋線法" (which translates to "seton placement") is a common approach for managing anal fistulas. This technique involves placing a thread or material through the fistula tract to help keep it open, allowing for continuous drainage and promoting healing. While it may sound daunting, many patients report that the pain associated with the procedure is manageable, and it can be an effective way to treat fistulas without the need for more invasive surgery.

If you are feeling apprehensive about the procedure, it is crucial to discuss your concerns with your healthcare provider. They can provide you with detailed information about what to expect, pain management options, and the potential benefits of the procedure. Understanding the rationale behind the treatment and the expected outcomes can help alleviate some of your fears.

In summary, while anal abscesses can lead to fistulas, not all do. Your current lack of symptoms is a good indication that your condition may be resolving. However, it is essential to follow up with your healthcare provider to ensure proper healing and to discuss the best course of action moving forward. If a fistula is confirmed or suspected, timely intervention can help prevent complications and improve your quality of life.

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