ST. PETERSBURG -- A new report is out on the potential of World Trade Center-related cancer. But the report raises more questions than it answers. The study suggests possible links between the Sept. 11, 2001 attacks and prostate, thyroid and a type of blood cancer from exposure to toxic debris at Ground Zero. The increased risks were seen only in rescue and recovery workers who were exposed to the debris. But there were few total cancers, and they were not common among workers who had the most exposure. The study's authors say the results should be interpreted with caution. New aspirin risk cited An new study shows that long-term use of aspirin can slightly raise the risk for vision loss. University of Wisconsin researchers say that people who use aspirin regularly for at least 10 years run a small risk of developing a potentially blinding condition known as age-related macular degeneration. Many older people take aspirin regularly to reduce their risk of a heart attack. The researchers found that people who took aspirin for 10 years almost doubled their risk for developing macular degeneration, compared with a less than 1 percent risk among people who did not take aspirin.