From CNN:
William Rehnquist has undergone throat surgery after a diagnosis of thyroid cancer, but is expected to be released from the hospital this week, according the Supreme Court.
Court spokeswoman Kathy Arberg said the 80-year old chief justice was admitted to the National Naval Medical Center at Bethesda, Maryland, on Friday, and underwent a tracheotomy Saturday.
Arberg said he is expected to be released from the hospital this week, and to be back on the bench when court arguments resume next week.