Very interesting article: 
They found that the black men had significantly higher rates of upgrading at surgery than their white counterparts (27.3% vs 14.4%; P < .001), and more adverse pathology (i.e., high-risk disease) (14.1% vs 7.7%; P = .001).
"African American men with very-low-risk prostate cancer should be counseled about increased oncologic risk when deciding among their disease management options," write Dr. Schaeffer and his coauthors.
The study was published online June 17 in the Journal of Clinical Oncology. recent study performed at John Hopkins suggests active surveillance would be less effective in African Americans than whites.