Kathy Griffin is maintaining her sense of humor after her cancer diagnosis and surgery.The comedian posted a video to Instagram on Saturday for the first time since having part of her left lung removed."Hi guys, I might start to post little videos about my recovery and stuff, but my voice is like, really hoarse and I don't want to scare people,"she joked. "I'm laughing, it's just even that notion."She continued, "Also, for some reason, I laugh at everything now.