Rectal Discomfort: Symptoms and Cancer Risks - Surgery

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In the middle of the night, there is a sensation of soreness and fullness in the anal area (distal rectum)?


Thank you! Please help me address my concerns.
(1) I have experienced two episodes (separated by a long time).
Both occurred at night when I felt a dull, bloated sensation in my rectum, prompting a strong urge to defecate, but I was unable to do so.
(2) Before the sensation of bloating occurred, I experienced intense itching at the anal opening, to the point of nearly breaking the skin.
These episodes were also spaced out over a long time, and this phenomenon has not occurred for a while, having now changed to the situation described in (1).
(3) I have a history of "colonic polyps." I undergo colonoscopy every 3 to 5 years, during which 1 to 2 polyps are removed each time.
(4) My family history indicates a high risk for cancer (multiple types of cancer); my father and sister both had colorectal cancer (stage 2-3).
My father recently passed away, and my sister is still undergoing treatment.
I would like to ask the doctor if my situation in (1) is normal.
Can colorectal cancer present with such prior symptoms? Thank you for your assistance in answering.

Amy, 50~59 year old female. Ask Date: 2022/04/09

Dr. Ke Fangxu reply Surgery


Rectal lesions or diverticula may exhibit this phenomenon.
If there are colorectal polyps and a family history, it is advisable to undergo a colonoscopy for better evaluation.

Reply Date: 2022/04/09

More Info


Thank you for your inquiry regarding your rectal discomfort and the associated cancer risks. It’s understandable to feel concerned, especially given your family history of colorectal cancer and your own history of polyps. Let’s break down your symptoms and the potential implications.

1. Symptoms Description: You mentioned experiencing a sensation of pressure and discomfort in the rectal area, particularly at night, along with an inability to pass stool. Additionally, you noted a previous experience of intense itching around the anal area. These symptoms can be indicative of several conditions, ranging from benign issues like hemorrhoids or anal fissures to more serious concerns such as rectal cancer.

2. Anal Itching: The itching you experienced could have been due to several factors, including irritation from hygiene products, dietary factors, or even skin conditions. While it is not directly indicative of cancer, persistent itching should be evaluated, especially in the context of your other symptoms.

3. History of Polyps: Your history of having colon polyps is significant. Polyps are growths on the lining of the colon or rectum, and while many are benign, certain types (like adenomatous polyps) can increase the risk of developing colorectal cancer over time. Regular surveillance through colonoscopy is crucial, as it allows for the detection and removal of polyps before they can progress to cancer.

4. Family History: With a family history of colorectal cancer, particularly in first-degree relatives, your risk is indeed higher. The presence of colorectal cancer in your father and sister suggests that genetic factors may play a role in your risk profile. It’s important to discuss this with your healthcare provider, as they may recommend more frequent screenings or genetic counseling.

5. Potential Cancer Symptoms: While your symptoms may not necessarily indicate cancer, they warrant further investigation. Symptoms such as rectal bleeding, significant changes in bowel habits, unexplained weight loss, or persistent abdominal discomfort can be red flags for colorectal cancer. The sensation of pressure and difficulty in passing stool could be related to a mass effect, which might be caused by a polyp or other growth.

6. Next Steps: Given your symptoms and medical history, it would be prudent to consult with a gastroenterologist. They may recommend a colonoscopy if you haven’t had one recently, especially considering your history of polyps and family cancer history. This procedure will allow for a direct examination of the colon and rectum, and any suspicious lesions can be biopsied for further evaluation.

7. Monitoring and Prevention: Continue with your routine screenings as advised by your healthcare provider. Maintaining a healthy diet rich in fiber, staying hydrated, and engaging in regular physical activity can help promote bowel health and potentially reduce the risk of polyp formation.

In conclusion, while your symptoms may not definitively indicate colorectal cancer, they are concerning enough to warrant further evaluation. Your proactive approach to monitoring your health is commendable, and I encourage you to seek medical advice promptly. Early detection is key in managing any potential issues effectively. Please take care, and I wish you the best in your health journey.

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