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† C. Why Ethnicity Counts With Prostate Cancer

Narrator: This is Science Today. University of California, San Francisco researchers have found a seldom used screening test for prostate cancer called PSA Density detects cancer in black men more efficiently than the standard bloodtest called PSA. Because of this finding, Urologist Joseph Presti says ethnicity cannot be ignored.

Presti: We need to take that into consideration and we cannot assume that the same normal standards that apply for Caucasians also applies for blacks.

Narrator: The PSA test alone detects malignancy in one out of three men. But PSA density, which uses ultrasound, found one out of two cancers in black men. Presti says although this test is more expensive than just the PSA alone, it is less invasive and much cheaper than a biopsy.

Presti: So you can really, by decreasing the number of men you have to biopsy, you could actually decrease your costs quite a bit. But I do have to caution this is early data and it will certainly have to be verified by other people.

Narrator: For Science Today, Iím Larissa Branin.