[WCCO 4 News, August 20, 2009] Amid the sea of pink at the Twin Cities Breast Cancer 3-Day this weekend, there will be a splash of blue. That is because 1 percent of breast cancer patients are men. Radiologist Deborah Day, MD, is the medical director of Allina's Piper Breast Center at Abbott Northwestern Hospital in Minneapolis. She said even though this cancer's risk is quite small for men, it exists because every man has at least some breast tissue. Every lump in that location on a man should be assumed to be cancerous until proven otherwise, adds Surgeon Daniel Dunn, MD, of Virginia Piper Cancer Institute at Abbott Northwestern Hospital.