Five years ago Partain's wife noticed a grape-size bump next to his right nipple. "I thought it was from an ingrown hair or something. I blew it off," he recalls. But a couple of weeks later he decided to get it checked out. When his doctor ordered a mammogram, he remembers, "a chill went down my spine." Then came a sonogram: Partain watched in amazement as an image emerged on the screen looking like one of the globular star clusters he knew as an astronomy hobbyist. "I never even knew men could get breast cancer!" he says.