The 1-year-old son of Devil Rays catcher Dioner Navarro was released from a Tampa hospital after surgery to remove a kidney.Dioner Navarro Jr. was born with cysts on his kidney, a condition known as multicystic kidney dysplasia. He had to have surgery when the cysts and kidney became abnormally large, said Kendall Almerico, Navarro's agent.Navarro missed the Rays' final six games last week as his son underwent extensive tests. "He's doing much better and the doctors think he's going to be fine," Navarro said. "I really want to thank the Rays for letting me be with my family when they needed me."The surgery was the latest in a series of troubles for the Navarros. His wife, Sherley, had surgery in 2003 after suffering a brain aneurysm. Shortly after being acquired by the Rays in June, the Navarros were victims of a hit-and-run accident near their Riverview home.- MARC TOPKIN, Times staff writer