When my husband, a doctor, went in for his first routine colonoscopy at 45 years old, he said nonchalantly, “I’ll be done by noon. Then we can grab lunch.” He recommends that his patients be screened on time, so he was simply following his own advice.

He had no symptoms suggesting anything was wrong, so when they found a few polyps — the largest one measuring 55 millimeters — we were caught off guard. A second procedure was necessary to remove the larger polyp, and when the biopsy came back showing cancer, our lives crumbled in an instant.

The right portion of his colon was removed, and three weeks later, our whirlwind nightmare began to…