Andrea Mitchell broke the news on MSNBC just after 1PM EST, citing an AP report. Mitchell reports a biopsy of Kennedy's left lobe provided a definitive diagnosis of a malignant tumor, which narrowed the carotid artery; Bob Bezell said early on that given the information in the AP report, it is a glioma and is treatable; AP reports survival prognoses varying from one to five years depending on the variety of tumor. As more information and the nature of the diagnosis emerged, the prognosis is likely closer to 18 months to 2 years.