Medicines for Anal cancer

What it is

Anal cancer is a relatively uncommon cancer that develops in the anus — the opening at the end of the back passage (rectum). It is often linked to infection with the human papillomavirus (HPV), a common virus, and other factors that can increase risk include a history of certain other HPV-related conditions, a weakened immune system (for example due to HIV), smoking, and older age. Because HPV is a major factor, HPV vaccination (offered to young people in the UK) helps protect against the types of HPV linked to anal and other cancers. The symptoms of anal cancer can include: bleeding from the anus or back passage; pain, discomfort, or itching around the anus; a lump or growth near or in the anus; a discharge or mucus; and changes in bowel habits or difficulty controlling bowel movements. Importantly, these symptoms are much more commonly caused by far more common and benign conditions — particularly piles (haemorrhoids) and anal fissures (small tears) — so they usually do not mean cancer. However, because the symptoms overlap, and because embarrassment can lead people to delay, it is important that these symptoms — especially bleeding, a lump, or persistent pain or changes — are checked, rather than assumed to be piles, particularly if they persist or do not improve with treatment. Anal cancer is treated by specialist teams, often successfully, particularly when found early, and treatment usually involves a combination of chemotherapy and radiotherapy, with surgery in some cases. The key messages are to be aware of the symptoms, to not let embarrassment cause delay, and to get symptoms checked.

How it is treated

Anal cancer is diagnosed and treated by specialist teams, and it is often very treatable, particularly when caught early. Because the symptoms overlap with common conditions like piles and fissures, assessment is important to reach the right diagnosis: this may involve an examination of the anus and back passage, and, if needed, tests such as a biopsy (taking a sample), and scans to assess the stage. The main treatment for anal cancer is usually a combination of chemotherapy and radiotherapy (chemoradiotherapy), which is often very effective and can avoid the need for major surgery; surgery is used in certain situations, for example if the cancer does not respond fully or comes back. The specific approach depends on the stage and the person’s circumstances, and supportive care to manage symptoms and side effects is an important part of treatment. Because early diagnosis improves outcomes, and because embarrassment can cause people to delay seeking help, the key message is to get symptoms checked: bleeding from the back passage, a lump near the anus, persistent pain, itching, discharge, or changes in bowel habits should be assessed by a GP — rather than assumed to be piles — particularly if they persist or do not settle with treatment. Reducing risk is also possible: HPV vaccination protects against the HPV types linked to anal cancer, not smoking reduces risk, and safer-sex measures reduce HPV transmission. It is worth keeping perspective — these symptoms are far more often due to common, benign conditions than to cancer — but they should still be checked. The reassuring messages are that anal cancer is relatively uncommon and often treatable (frequently with chemoradiotherapy rather than major surgery), especially when found early, and that getting symptoms checked, without letting embarrassment cause delay, is the most important step.