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
Alivia Parker, 21 months at the time, ran through circles of spraying water on a hot day in Montgomery, Ala., last June. She was wearing sunscreen with an SPF of 100, a rating that won't be allowed much longer.
Karen Lindsfor, a professor of radiology and chief of breast imaging at the University of California, Davis Medical Center, examines the mammogram of a patient with heterogeneously dense breast tissue. Lindfors is among those doctors who say there was insufficient evidence to support the idea that additional screenings would detect cancers earlier.