Is this a symptom of rectal cancer?
Narrowing stools may be a symptom of rectal cancer. However, there are multiple causes for this symptom, and not all of them are attributed to rectal cancer.
Rectal Cancer Scenario
If a patient experiences the aforementioned symptom accompanied by other discomforts, it is considered to be caused by rectal cancer. As the tumor grows in size, it compresses surrounding tissues, affecting normal bowel function, leading to narrower stools. Additionally, tumor cells invade intestinal mucosa and blood vessels, resulting in abdominal pain, loss of appetite, and other symptoms.
Non-Rectal Cancer Scenarios
- Hemorrhoids: Poor dietary habits or prolonged sitting can induce hemorrhoids, which may manifest as narrowing stools during disease progression. This is accompanied by symptoms such as anal itching and pain.
- Colitis: Typically caused by autoimmune factors or genetics, repeated local inflammation can narrow the intestinal lumen, leading to the observed symptom. It is also accompanied by abdominal pain, diarrhea, vomiting, and other symptoms.
- Anal Fissure: Usually caused by long-term constipation or diarrhea, anal fissure occurs when the skin around the anus tears, leading to the described symptom. It is accompanied by severe pain and bleeding.
Furthermore, diseases such as ulcerative colitis and bacterial dysentery may also cause similar symptoms. It is recommended to promptly consult a hospital for relevant examinations to determine the underlying cause before initiating treatment.
