Special thanks to Gordon McCleod on the PPML for this info...This is what I understood as well. Why it seems like younger guys get more aggressive disease may be due to only being screened when symptoms are present. Just my thought.
Of men dignosed with prostate cancer...
Sources: NPCR and SEER
76% of white men between 40 and 49 have stage I or II cancers.
75% of white men between 50 and 59 have stage I or II cancers.
73% of white men between 60 and 69 have stage I or II cancers.
68% of white men between 70 and 79 have stage I or II cancers.
53% of white men between 80 and 89 have stage I or II cancers.
21% of white men between 40 and 49 have stage III cancers.
21% of white men between 50 and 59 have stage III cancers.
23% of white men between 60 and 69 have stage III cancers.
25% of white men between 70 and 79 have stage III cancers.
35% of white men between 80 and 89 have stage III cancers.
A smaller percentage of men had stage IV cancers (eg. 456 per 100,000 aged 50-59)
Tony