(Gresham, OR)  --  Police are searching for a missing man in Gresham.  Frank Wilson hasn't been seen since Thursday, and could be in need of medical attention.  The 68-year-old man has heart problems and diabetes.  He is described as being six-foot-one, 235 pound, with brown eyes and short gray hair.  He drives a 2003 Ford pickup with a disabled veteran license plate.  Anyone with any information is urged to call 9-1-1.