Hudson & Rex star John Reardon clarified the circumstances of his exit from the show amid his tonsil cancer battle. "I've been quiet for a while - partly because it was hard to find the words, and partly because I didn't want anyone else speaking for me," Reardon, 50, wrote via Instagram on Tuesday, September 23. "The truth is: I didn't leave Hudson & Rex. After taking a couple months to go through cancer treatment, I was given a clean bill of health and cleared and ready to return to work.