A Man Who Had Suffered From Displaced Fracture Of Mandible Complains Of Pain In-Old Fracture Site Near Mental Foramen. There Is A Movable Tender Mass On Palpation In The Area The Best Preoperative Diagnosis Is______

A Man Who Had Suffered From Displaced Fracture Of Mandible Complains Of Pain In-Old Fracture Site Near Mental Foramen. There Is A Movable Tender Mass On Palpation In The Area The Best Preoperative Diagnosis Is______