Persistent Pain After Anal Fissure Surgery: Exploring Ultrasound Options - Surgery

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Persistent pain 8 months after a lateral internal sphincterotomy for anal fissure?


Hello Dr.
Chang, I am a patient of #205047.
Thank you for your recent response.
The original surgeon kept telling me that the surgery was very successful and that he didn't know why I was in pain, attributing it to my personal issue, so I can't go back to him.
I have consulted several doctors, but none mentioned the need for an ultrasound examination.
I would like to ask you, is an ultrasound examination also a procedure used in colorectal surgery? What methods are available for this examination? Additionally, I would like to know if this examination is more painful than a rectal examination.
Thank you.

Jiu Xiansheng, 40~49 year old female. Ask Date: 2024/01/29

Dr. Zhang Shuhao reply Surgery


Anorectal ultrasound involves inserting a probe through the anus to assess the integrity of the sphincter muscles and the condition of postoperative scarring.
Additionally, anorectal manometry can be performed to identify the causes of incontinence.
These two tests are typically arranged in the colorectal department of a medical center.

Reply Date: 2024/01/29

More Info


After undergoing surgery for an anal fissure, it is not uncommon for patients to experience persistent pain. This can be frustrating, especially when previous medical professionals have assured you that the surgery was successful. Understanding the reasons behind this ongoing discomfort is crucial for effective management and treatment.

Firstly, it’s important to recognize that pain after anal fissure surgery can arise from several factors. These may include incomplete healing of the fissure, the presence of scar tissue, or even the development of new fissures. Additionally, muscle spasms in the anal sphincter can contribute to ongoing pain, as they may cause increased pressure and discomfort in the area.
Regarding your question about ultrasound examinations, yes, ultrasound can be utilized in the field of colorectal surgery, although it is not as commonly performed as other imaging techniques. An anal ultrasound can help visualize the anal canal and surrounding structures, providing valuable information about any abnormalities that may be contributing to your pain. This imaging technique can assess for issues such as abscesses, fistulas, or any residual fissures that may not have healed properly.

When comparing the discomfort of an anal ultrasound to that of an anoscopy (the procedure where a small tube is inserted into the anus to examine the anal canal), many patients report that the ultrasound is generally less painful. An anoscopy can be uncomfortable as it involves direct visualization of the anal canal, which can provoke discomfort, especially if there is existing pain or sensitivity in the area. In contrast, an anal ultrasound is typically performed externally, and while some pressure may be felt, it is usually not as invasive or painful as an anoscopy.

If you are considering an ultrasound, it is advisable to consult with a colorectal surgeon or a gastroenterologist who specializes in this area. They can provide guidance on whether this imaging modality is appropriate for your situation and how to proceed with scheduling the examination.
In addition to imaging, there are several other strategies that can be employed to manage persistent pain after anal fissure surgery. These may include:
1. Medications: Over-the-counter pain relievers such as ibuprofen or acetaminophen can help alleviate discomfort. In some cases, your doctor may prescribe stronger pain medications or topical treatments to help with healing and pain relief.

2. Dietary Adjustments: Ensuring a high-fiber diet can help prevent constipation and reduce straining during bowel movements, which can exacerbate pain. Staying well-hydrated is also crucial.

3. Sitz Baths: Taking warm sitz baths can provide relief by relaxing the anal muscles and promoting blood flow to the area, which may aid in healing.

4. Physical Therapy: Some patients benefit from pelvic floor physical therapy, which can help address muscle spasms and improve overall function.

5. Follow-Up Care: Regular follow-up with your healthcare provider is essential to monitor your progress and make any necessary adjustments to your treatment plan.

In conclusion, persistent pain after anal fissure surgery is a complex issue that may require a multifaceted approach for effective management. Ultrasound can be a useful tool in diagnosing underlying problems, and it is generally less painful than an anoscopy. Consulting with a specialist will help you navigate your options and find the most appropriate course of action for your situation.

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