Fistula Recurrence: Hard Lump After Surgery Concerns - Surgery

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Is the fistula likely to recur?


In January of this year, I underwent a fistula surgery.
A week after the surgery, I returned for a follow-up appointment, and the doctor said that my recovery was going well and that I did not need to return for further visits.
After that, I continued to soak in a sitz bath for about one to two months, but eventually stopped.
Not long after the wound healed, I noticed a hard lump at the surgical site when I touched it.
I thought it might be scar tissue from the surgery, so I didn't pay much attention to it.
However, now that six months have passed, the hard lump is still present.
It doesn't have a small wound like the fistula did that would ooze blood, but I do feel some discomfort when sitting for long periods, and it seems to be slightly painful when pressed.
Initially, I had to return to work shortly after the surgery, so I started sitting down, but I used a towel to cushion the area around my buttocks to avoid direct pressure on the wound.
I admit that I became lax with the sitz baths, only continuing for about two months.
Could the lack of continued soaking have caused the scar to harden? Or could this actually be a recurrence of the fistula?

Ru, 20~29 year old female. Ask Date: 2017/07/23

Dr. Ke Fangxu reply Surgery


Based on your description, it seems more like a scar left after surgical wound healing.
Generally, scar tissue takes about six months to stabilize and enter the absorption phase.
As long as there is no redness, swelling, heat, pain, or discharge, there is no cause for concern.
Any mild tenderness should gradually diminish.

Reply Date: 2017/07/23

More Info


After undergoing fistula surgery in January, it is understandable to have concerns about the presence of a hard lump at the surgical site, especially after six months of recovery. Based on your description, there are several potential explanations for the hard lump you are experiencing, and it is essential to consider these in the context of your recovery process.

Firstly, the hard lump you feel could indeed be scar tissue, also known as fibrosis. After any surgical procedure, the body naturally forms scar tissue as part of the healing process. This tissue can sometimes feel firm or hard to the touch, and it may cause discomfort, especially if it is pressing against surrounding tissues or nerves. The fact that you have not experienced any drainage or bleeding from the site is a positive sign, suggesting that there may not be an active infection or recurrence of the fistula at this time.

However, the persistence of the lump and the discomfort you feel when sitting or applying pressure could indicate that the scar tissue is causing some irritation or that there may be other underlying issues. It is not uncommon for scar tissue to become painful, particularly if it is located in an area that experiences regular movement or pressure.

Another possibility is that the lump could represent a recurrence of the fistula. While it is less likely, especially given the absence of drainage, it is crucial to monitor any changes in the lump's size, shape, or associated symptoms. If the lump begins to change or if you experience increased pain, it would be advisable to seek further evaluation.

Regarding your concern about not continuing to soak in warm water (sitz baths), this practice is often recommended post-surgery to promote healing and comfort. Soaking can help soften the tissue and may assist in reducing scar formation. However, the lack of continued soaking alone is unlikely to be the sole reason for the hard lump's persistence.

To address your concerns effectively, I recommend the following steps:
1. Consult Your Surgeon: It is essential to return to your surgeon or a healthcare provider who can assess the lump. They may perform a physical examination and, if necessary, imaging studies (like an ultrasound) to determine the nature of the lump.

2. Pain Management: If the lump is causing discomfort, discuss pain management options with your healthcare provider. They may recommend over-the-counter pain relievers or other treatments to alleviate discomfort.

3. Physical Therapy: If scar tissue is suspected to be the cause of your symptoms, a referral to a physical therapist may be beneficial. They can provide targeted exercises and treatments to help manage scar tissue and improve mobility.

4. Monitor Symptoms: Keep track of any changes in the lump or your symptoms. If you notice any new signs, such as increased pain, swelling, or drainage, seek medical attention promptly.

In summary, while the hard lump you are experiencing could be scar tissue, it is crucial to have it evaluated by a healthcare professional to rule out any complications, including the possibility of recurrence. Early intervention can help address any issues and improve your recovery experience.

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