Diseases

    Colorectal Cancer: Warning Signs

    Updated 2026-06-094 min read

    Early-stage colorectal cancer can be silent. Recognising warning signs and timely colonoscopy improve the chance of early diagnosis.

    Warning signs

    • Persistent change in bowel habit
    • Blood in stool or rectal bleeding
    • Unintentional weight loss
    • Persistent abdominal discomfort or sensation of incomplete evacuation
    • Iron-deficiency anaemia of unclear cause

    Who is at higher risk?

    • Family history of colorectal cancer or polyps
    • Personal history of inflammatory bowel disease
    • Certain hereditary syndromes
    • Advancing age

    Role of colonoscopy

    Colonoscopy can identify lesions and allow biopsy or removal of polyps. Screening intervals are individualised based on findings and risk factors.

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    Frequently asked questions

    Related topics

    When is colonoscopy needed?Colon polyps: are they dangerous?Blood in stool — what to do
    Türkçe version of this page: https://www.kolorektalantalya.com.tr/blog/kolorektal-kanser-belirtileri
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