Dear Tad,
Routine prostate checks are reccommended after the age of 50. If you're are African American or have a family history of prostate cancer, some urologists recommended routine prostate exams starting at the age of forty. In regards to sigmoidiscopy, I don't know that this is indicated until the age of 50 unless there is blood in the stool or a family history.
A prostate check usually includes a rectal exam, which needs no preparation, and a PSA blood test. Prostate Awareness week is coming up and you could go to a near by center for information and a free screening. They can answer any of your further questions.
This information is given for general medical education purposes only. Please consult your physician for further information or examination. You may call Henry Ford Hospital or Henry Ford Health System at 1-800-653-6568.
Sincerely,
HFHS M.D.-AK