Finding a small lump in the anal area can be worrying. Is it dangerous? Could it turn into cancer? Or is it simply a haemorrhoid? These are very common questions in the clinic, and the good news is that most anal polyps have a simple solution when detected in time. In this article I answer the most frequent questions so you can come to your appointment with clear information and without unnecessary worry.
What exactly is an anal polyp?
An anal polyp is an abnormal growth of tissue that develops on the lining of the anal canal or on the surrounding skin. Unlike colon polyps, which appear further up in the large intestine, anal polyps are located in the last few centimetres of the digestive tract. Their size can range from a few millimetres to several centimetres, and their shape varies: some are pedunculated (hanging from a stalk) while others are sessile (attached directly to the lining). Although many are entirely benign, they should always be assessed by a specialist to rule out any problem.
Types of anal polyps
Not all anal polyps are the same. Knowing the type is essential for deciding on the most appropriate treatment:
- Fibroepithelial polyp (skin tag): The most common type. It consists of an excess of soft, hanging skin, generally benign. It often appears as an after-effect of old haemorrhoids or fissures. It has no malignant potential, but can cause discomfort or make hygiene difficult.
- Inflammatory polyp: This develops in response to chronic irritation of the lining, for example after repeated episodes of inflammation. It is also not malignant, but it is best removed to relieve symptoms and confirm its nature through testing.
- Adenomatous polyp: The type that requires the most attention. It is made up of glandular tissue with some potential to become malignant if left to grow untreated for years. Its presence calls for removal and subsequent follow-up.
Anal polyp or haemorrhoid? How to tell them apart
This is one of the most common sources of confusion, and it's completely understandable: both cause a sensation of a lump in the anal area and can bleed. However, they are very different structures. Haemorrhoids are dilated blood vessels in the anal canal; when inflamed or prolapsed, they form a soft, bluish or reddish lump that often hurts or itches. Polyps, on the other hand, are growths of mucosal or skin tissue, generally firmer, pinkish and smooth-surfaced. The only way to tell them apart with certainty is through a direct examination by a proctologist. Trying to make that diagnosis at home, or assuming "it's just a haemorrhoid", can delay the detection of a polyp that needs treatment.
Symptoms that may indicate an anal polyp
- Sensation of a lump or foreign body in the anus
- Mild bleeding when passing stools (bright red blood on the paper or in the stools)
- Persistent itching or irritation in the perianal area
- Mucous discharge or unusual moisture
- Discomfort or pressure during or after a bowel movement
- Difficulty keeping the area fully clean
It's worth noting that many anal polyps are symptom-free for a long time, especially smaller ones. Chance discovery during a check-up is more common than people think.
Can an anal polyp be malignant?
The vast majority of anal polyps are benign, and the risk of malignancy is low compared with colon polyps. However, adenomatous polyps do carry a potential for malignant transformation if left untreated for years. That's why the recommendation is always to remove them and send the sample for pathological analysis to obtain a definitive diagnosis. The fact that a polyp is small or painless does not guarantee it is harmless: only histological analysis can confirm that. Detecting it in time turns what could become a serious problem into a simple, outpatient solution.
When should an anal polyp be removed?
The decision to remove a polyp depends on its type, size and symptoms, but in general it is recommended to remove any polyp that causes discomfort, bleeds, is growing, or whose nature has not been confirmed histologically. Seek urgent advice if you notice heavy bleeding, a rapid change in size, severe pain or general symptoms such as unexplained weight loss. At the ONEstep® specialist anal polyp clinic, diagnosis and treatment can be carried out in a single visit using outpatient electrocoagulation, without general anaesthesia or hospital admission. If you have doubts about a previous diagnosis, you can also request a medical second opinion before making any decision.
Frequently asked questions
The removal procedure using electrocoagulation is carried out under local anaesthesia, so no pain is felt during the procedure. Afterwards there may be mild discomfort for a day or two, similar to a small graze, which is easily controlled with oral pain relief. Most patients resume their normal activity the following day.
Growth depends on the type of polyp and individual factors. Fibroepithelial polyps can remain stable for years, while adenomatous polyps tend to grow progressively. There is no universal timeframe, but any polyp that grows noticeably within a few weeks deserves urgent assessment. That's why it's important not to delay seeking advice when a new lump is detected in the anal area.
Yes, recurrence is possible, especially if the factors that caused them persist, such as chronic constipation, frequent diarrhoea or repeated inflammation. That's why, after removal, it's recommended to adopt healthy bowel habits and have periodic check-ups. For adenomatous polyps, follow-up is especially important to detect any new growth early.
Have you been diagnosed with a polyp, or do you have symptoms?
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