John Cena's MRI Scan Result

To follow up on the news that John Cena underwent an MRI last week to determine the extent of his back injury, the MRI came back clean. It's been reported that Cena has been working with a bulging disc in his lower back and he's been working a lighter schedule in recent weeks, but he is in relatively good shape. (source: PWInsider.com)

didn't he need surgery for a bulging disk in his neck, or similar?