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Colorectal Cancer Diagnosed Too Late in Youth

Study finds that 80 percent of patients aged 21 or younger had advanced disease at diagnosis, highlighting the importance of recognizing warning signs

  • November 4, 2026

  • 2 min

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  • 1

    In a multicenter study of 84 patients diagnosed by age 21, 80% had stage III or IV colorectal cancer at diagnosis.

  • 2

    Only 20% of patients had a first- or second-degree relative with colorectal cancer, and the median age at diagnosis was 16.5 years.

  • 3

    Abdominal or back pain was the most common presenting symptom, reported by 74% of patients; median symptom duration before diagnosis was 12 weeks.

  • 4

    Tumors often had aggressive features: 42% were poorly differentiated, one-third had signet ring features, and 39% had mucinous features.

  • 5

    Disease recurred in 37% of patients, typically within 11 months, and 45% died from colorectal cancer during the study period.

Original Source(s)

Colorectal Cancer Diagnosed Too Late in Youth

  • November 4, 2026

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