A doctor answers the question: What is remission? Dr. Charles Nash is the medical director of the Cancer Center at Northeast Georgia Medical Center. He is also an oncologist with The Longstreet Clinic Department of Medical Oncology and Hematology. Nash said that breast cancer is one of the top four cancers treated at The Longstreet Clinic, accounting for at least 25 percent of all cases, followed by lung cancer, prostate cancer and gastrointestinal cancers. - photo by Scott Rogers Remission is different for each and every patient, but the definition remains the same.