Pop singer Celine Dion has been forced to cancel 10 shows due to weakness in her vocal chords, according to a press release.  The singer is currently in the midst of a residency at the Caesar's Palace Colosseum in Las Vegas, but experienced discomfort during a performance last week.  As a result, the 10 shows through March 18th have been canceled, and the singer will head to Los Angeles to get checked out.  Barring any setbacks, Dion will resume her residency at The Colosseum, resuming the shows on June 9th.  Ticket for the canceled shows will be refunded in full.