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Anal cancer symptoms that overlap a hemorrhoid

The National Cancer Institute, updated May 16, 2025 and opened October 28, 2026, says bleeding, a lump near the anus, pain or pressure, itching or discharge, and a change in bowel habits may be caused by anal cancer or by other conditions. Mayo Clinic's page, dated February 3, 2026, says those kinds of symptoms might be mistaken for hemorrhoids, and that a healthcare professional should check the area and biopsy any growth. Mayo Clinic says about 0.2 percent of people develop anal cancer during their lifetime. The symptom list is a reason to be seen. It is not a home diagnosis.

By ahem. Published October 28, 2026.

Symptoms the two pages share

These pages describe symptoms a clinician is meant to sort out. ahem has not examined anyone and does not sell a treatment. A sentence that matches bleeding or a lump does not decide the cause.

The National Cancer Institute updated its symptoms page on May 16, 2025. Opened October 28, 2026, it says these signs and symptoms may be caused by anal cancer or by other conditions, and to check with a doctor for bleeding from the anus or rectum, a lump near the anus, pain or pressure in the area around the anus, itching or discharge from the anus, or a change in bowel habits.

Mayo Clinic dates its anal cancer page February 3, 2026. If symptoms appear, the list is bleeding from the anus or rectum, blood in the stool, pain in the area of the anus, a growth in the anal canal, anal itching, changes in stool appearance and bowel habits including thinner stools or constipation, and a feeling of fullness or of needing to go even after going. Bleeding, a lump or growth, pain, itching, and a change in bowel habits are on both pages. Discharge is the institute's word. Blood in the stool, thinner stools, and the feeling of fullness are Mayo Clinic's additions on the page opened the same day.

What Mayo Clinic says can be mistaken for a hemorrhoid

Mayo Clinic says anal cancer can cause rectal bleeding, blood in the stool, and anal pain. As it grows, it might cause a growth or lump that constantly bleeds, itches, or hurts. It says these symptoms might be mistaken for hemorrhoids. The institute's page says the same kinds of signs may come from anal cancer or from other conditions, and it does not use the word hemorrhoid. The hemorrhoid comparison is Mayo Clinic's sentence.

How the hemorrhoid pages describe a swollen vein, and why bright red bleeding still gets checked, is on when rectal bleeding should be checked. Pain with a bowel movement and a small tear are a different comparison, on hemorrhoids and anal fissures. A polyp that can also bleed, often with no symptom at all, is on a colon polyp and rectal bleeding.

A lump, a sore, and a biopsy

Mayo Clinic says anal cancer is a growth of cells that starts in the anal canal, a short tube at the end of the rectum. On the page dated February 3, 2026 and checked October 28, 2026, that tube measures 1 1/2 inches in length, about 4 centimeters. The institute's symptoms page does not print a length.

Mayo Clinic says anal cancer may appear like a firm lump or bump, an open sore or ulcer, or a thickened, wartlike area of skin. It says it is important to have a healthcare professional check the area and take a tissue sample, called a biopsy, from any growth to make a diagnosis. The institute says to check with a doctor if you have a lump near the anus. The biopsy sentence is Mayo Clinic's.

Mayo Clinic says to make an appointment if you have any symptoms that worry you or if they are not going away. Typically, it says, a healthcare professional looks for hemorrhoids, lumps, tears called fissures, or lesions that need to be tested. What that kind of look includes for a hemorrhoid question, including a gloved exam and a scope, is on what a hemorrhoid exam checks.

How often Mayo Clinic says it happens

Mayo Clinic says anal cancer is fairly rare, with about 0.2 percent of people developing it during their lifetime. That figure is on the page dated February 3, 2026 and opened October 28, 2026. The institute's symptoms page does not print a lifetime figure. The rarity sentence is a reason the symptom list still belongs with a clinician, not a reason to ignore bleeding or a lump.

Mayo Clinic says that for most people, anal cancer develops after a long-term infection with a high-risk type of human papillomavirus in the anal area, and that the most common type is squamous cell carcinoma. It says most cases of that type are linked to human papillomavirus types 16 and 18. The institute's symptoms page opened the same day does not discuss the virus. The virus sentences stay with Mayo Clinic.

Mayo Clinic's risk list includes exposure to that virus, a greater number of sexual partners, receptive anal sex, smoking cigarettes, a history of penile, cervical, vulvar, or vaginal cancer, a weak immune system, and a history of a sexually transmitted disease, including anal warts. It says there is no sure way to prevent anal cancer. Steps it names are safer sex, the human papillomavirus vaccine after asking a healthcare team if it is right for you, and not using tobacco.

Screening, where Mayo Clinic says groups differ

Mayo Clinic says screening tests can help detect anal cancer and precancerous cells, and that healthcare professionals sometimes recommend screening for people at high risk. The high-risk groups it names are people with HIV, people with high-risk human papillomavirus, people taking medicine to manage the immune system after an organ transplant, and people who have been diagnosed with precancerous cells in the penis, scrotum, cervix, vagina, or vulva.

Tests it names are an anal Pap test, an anal HPV test, and a digital rectal exam. It also says medical groups do not agree on who should have anal cancer screening and what tests should be used. Screening can find anal cancer when it is small. Studies have not proved that anal cancer screening saves lives, on that page. The instruction it prints is to talk about benefits and risks with a healthcare team. The institute's symptoms page does not set a screening schedule.

Bleeding or a lump gets a look

The institute says to check with a doctor for bleeding from the anus or rectum, a lump near the anus, pain or pressure, itching or discharge, or a change in bowel habits, because those signs may be anal cancer or another condition. Mayo Clinic says to make an appointment for symptoms that worry you or are not going away, and that a growth needs a check and a biopsy rather than a guess that it is a hemorrhoid.

A large amount of rectal bleeding, or bleeding with lightheadedness, dizziness, or faintness, is the emergency line on the hemorrhoid symptoms pages. It lives on when rectal bleeding should be checked. Mayo Clinic's anal cancer page adds that when anal cancer spreads to distant parts of the body, which it says is not common, it tends to travel to the liver and lungs.

  • Bleeding from the anus or rectum, a lump, pain, itching, or a change in bowel habits: the institute says to check with a doctor.
  • A growth that bleeds, itches, or hurts: Mayo Clinic says it might be mistaken for a hemorrhoid and should be checked, with a biopsy of any growth.
  • Symptoms that are not going away: Mayo Clinic says to make an appointment.

Sources

  1. Anal cancer: Symptoms and causes. Mayo Clinic. Accessed October 28, 2026. Mayo Clinic dates this page February 3, 2026.
  2. Anal cancer symptoms. National Cancer Institute. Accessed October 28, 2026. The National Cancer Institute lists an update of May 16, 2025.

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