First: Good news from Duke, where Sen. Edward Kennedy (D-Mass.) underwent what his doctors are calling “successful” surgery today on a malignant brain tumor. While the initial announcement of Kennedy’s condition and potential treatment a couple of weeks ago did not include surgery as a likely option for the 76-year-old senator, Kennedy went forward with the aggressive procedure this morning. It has yet to be revealed exactly how much of the tumor surgeons were able…

The Associated Press is reporting that Sen. Edward Kennedy (D-Mass.) has been diagnosed with a malignant brain tumor. The tumor, on Kennedy’s left parietal lobe, is known as a “malignant glioma,” and was discovered when doctors conducted tests after Kennedy suffered a seizure over the weekend. The tumor has been determined to have been the cause of the seizure. The 76-year-old senator has been hospitalized in Boston since Saturday, and doctors have not yet given…