He was off the air most of the month of December with an undisclosed medical issue. Posted to his web site (www.depetro.com) on xmas eve that he was leaving his show effective immediately. 52 years old, doesn't sound too good. Now PRO is scrambling to find a new mid-morning host, 2nd major loss since the unexpected death of Buddy Cianci about a year ago which left the station's lineup in turmoil and still recovering.