Hard Lumps Near the Anus: What You Need to Know - Surgery

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There is a hard lump next to the anus?


Hello doctor, I noticed a small, hard lump next to my anus after using the bathroom on Wednesday.
It is not raised and does not hurt.
I searched online for information but couldn't determine what it is.
I would like to ask if it could be a fistula? Should I pay special attention to it, or is it sufficient to just observe it?

77, 10~19 year old female. Ask Date: 2023/08/05

Dr. Zhang Shuhao reply Surgery


There are many differential diagnoses for a hard lump near the anus.
If there is no redness, swelling, heat, pain, or discharge, the possibility of an anal fistula cannot be completely ruled out.
It is advisable to monitor the symptoms for any changes in size, and if there is no improvement, it is recommended to seek medical evaluation.

Reply Date: 2023/08/05

More Info


When you notice a hard lump near the anus, it can understandably cause concern. There are several potential causes for such a lump, and understanding them can help you determine the best course of action.

One possibility is the presence of a hemorrhoid, which can be either internal or external. External hemorrhoids can feel like hard lumps near the anus and may not always be painful, especially if they are not thrombosed (clotted). They can arise from increased pressure in the rectal area, often due to straining during bowel movements, pregnancy, or prolonged sitting.

Another possibility is a perianal abscess or fistula. An abscess is a collection of pus that can form due to infection, while a fistula is an abnormal connection between the anal canal and the skin. These conditions can sometimes present as lumps, and while they may not always be painful initially, they can lead to discomfort or pain if they become infected or inflamed.

A sebaceous cyst is another benign condition that can occur in the perianal area. These cysts are filled with a fatty substance and can feel firm to the touch. They are usually harmless but can become infected, leading to pain and swelling.

In some cases, a hard lump could be a skin tag, which is a benign growth of skin that can occur around the anal area. Skin tags are typically painless and do not require treatment unless they become bothersome.

While it is possible that what you are experiencing could be a fistula, it is essential to consider other factors such as the lump's characteristics, any accompanying symptoms (like pain, bleeding, or changes in bowel habits), and your medical history.

Given that you mentioned the lump is small, hard, and not painful, it may not require immediate intervention. However, it is crucial to monitor it for any changes. If the lump becomes painful, increases in size, or if you experience any other concerning symptoms (such as bleeding, discharge, or changes in bowel habits), it would be wise to seek medical attention.

In terms of self-care, maintaining good hygiene in the anal area can help prevent infections. Avoiding straining during bowel movements and ensuring a high-fiber diet can also help reduce the risk of hemorrhoids and other anal conditions.

In conclusion, while the lump you described may not be an immediate cause for alarm, it is essential to keep an eye on it. If you have any doubts or if it changes in any way, consulting a healthcare professional for a thorough examination would be the best course of action. They can provide a definitive diagnosis and recommend appropriate treatment if necessary.

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