Medical Oddities: A Cancer Clue Some Patients Can’t See - Takeaways - MDSpire

Medical Oddities: A Cancer Clue Some Patients Can’t See

This week’s science roundup shows how hidden signals can shape real outcomes.

  • By

  • Teraya Smith

  • January 21, 2026

  • 5 min

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  • 1

    Color vision deficiency (CVD) may negatively impact survival rates in bladder cancer patients compared to those without CVD.

  • 2

    Bladder cancer patients with CVD showed a 52% higher 20-year mortality rate than matched controls without CVD.

  • 3

    Colorectal cancer outcomes were similar for patients with and without CVD, indicating different clinical implications.

  • 4

    The study suggests that inability to see red should not lower suspicion for bladder cancer, especially with visible blood.

  • 5

    This research highlights the unexpected connections between sensory perception and cancer outcomes.

Original Source(s)

Medical Oddities: A Cancer Clue Some Patients Can’t See

  • by Teraya Smith

  • January 21, 2026

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