Terry Dyroff, of Silver Spring, Md., had a PSA blood test that led to a prostate biopsy. The biopsy found no cancer but did give him a life-threatening infection. Jose Luis Magana/AP hide caption

itoggle caption Jose Luis Magana/AP

Terry Dyroff, at home in Silver Spring, Md., got a PSA blood test that led to a prostate biopsy. The biopsy found no cancer, but it gave him a life-threatening infection. Jose Luis Magana/AP hide caption

itoggle caption Jose Luis Magana/AP

Former House Speaker Newt Gingrich makes a point during the presidential debate sponsored at Dartmouth College in Hanover, New Hampshire, Tuesday night.

Toni Sandys/The Washington Post via AP hide caption

itoggle caption Toni Sandys/The Washington Post via AP

Chicago attorney Tom Hayward suffered a raging infection after a prostate biopsy. He had to be hospitalized, but has since recovered.

Icoi Johnson for NPR hide caption

itoggle caption Icoi Johnson for NPR