In this April 27, 2009 file photo, Cameron Douglas, son of Michael Douglas, arrives at the premiere of the film "Ghosts of Girlfriends Past" in Los Angeles. Michael Douglas has asked a federal judge in a handwritten letter to show leniency toward Cameron Douglas at a sentencing set for Tuesday, April 20, 2010. (AP Photo/Chris Pizzello, File)
December 21, 2011 11:01:02 AM PST
NEW YORK (AP) - December 21, 2011 --
The imprisoned son of actor Michael Douglas has been sentenced to spend 4½ years in prison beyond the five years he already is serving for drug offenses.