The seriousness of Gary Carter's fight against brain cancer increased Saturday when his family was told by doctors they were "99 percent sure" he has a Grade 4 Glioblastoma and that it is likely inoperable. The results won't be confirmed until Tuesday and the family is hopeful for more positive news. However, tests have shown the cancer "is like a snake of tumors that are connected across the back of the brain. The biggest tumor is on the left side of the brain," wrote one of Carter's daughters on a family website. Though the tumors may be inoperable, Dr. Henry Friedman of the Duke Medical Center told the family the medical team will be "attacking [the disease] and doing all we can to shrink these tumors. He explained that we are not fighting to prolong Dad's life, instead, we are fighting to cure him completely."