What should you know about non-familial adenomatous polyposis?

A person may have many adenomatous polyps even when relatives have not had polyps or bowel cancer. This can reflect a new genetic change, an alteration limited to bowel tissue, or a cause that remains unexplained. Lack of family history does not remove the need to assess inherited risk.

Adenomas can change over time, and the risk depends on their number, size, microscopic features, and location. The diagnosis is not the same as bowel cancer, but it can be associated with a higher future risk of colorectal cancer.

A gastroenterology team may recommend colonoscopy to examine the bowel and remove suitable polyps. The findings determine how often surveillance is needed and whether an operation should be considered.

Genetic counselling can review your personal history, the polyp pattern, and relatives who may need assessment. If polyps cannot be controlled safely with endoscopic treatment, bowel resection may be discussed. Keep appointments and tell the team about rectal bleeding, altered bowel habits, or a close relative with bowel cancer.

Get urgent help for heavy rectal bleeding, black stools, severe abdominal pain, repeated vomiting, fainting, or a swollen abdomen with inability to pass stool or gas. Contact your clinical team promptly for new bleeding or a persistent change in bowel habit.

Ask how many polyps were found, what their pathology shows, when your next colonoscopy is due, whether genetic counselling is appropriate, and what findings would make surgery necessary.