HI THANKS FOR POSTING YOUR QUERY. YOUR RELEVANT CLINICAL HISTORY POINTS LIKELY TOWARDS A METASTATIC DEPOSIT(DISTANT TUMOUR SPREAD) AS THE CAUSE OF YOUR SYMPTOMS,PARTICULARLY CHRONIC BACKACHE.IN THE VIEW OF PAST HISTORY OF CANCER CERVIX 4 YEARS AGO,A TUMOUR SPREAD TO VERTEBRAL COLUMN BONES SHOULD BE SUSPECTED AS A CAUSE OF CHRONIC BACKACHE.SUCH DEPOSITS IN THE BACK BONE ARE LIABLE FOR PATHOLOGICAL FRACTURES. YOU NOW HAVE A PERFECT INVESTIGATIVE FOLLOW UP IN THE FORM OF CT SCAN AND A SCHEDULED PET SCAN .PET SCAN IS KNOW TO EXHAUSTIVELY DETECT TUMOUR RECURRENCE.BACK PAIN DUE TO CANCER SHOULD BE MANAGED WITH OPIOID DRUGS LIKE MORPHINE,PERCODAN,HYDROCODONE,OXCODON ETC.BUT THESE MEDICATIONS ARE KNOWN FOR THEIR ADDICTIVE POTENTIAL.A COMBINATION AN OPIOID LIKE HYDROCODONE WITH NON OPIOID LIKE KETOPROFEN WOULD BE VERY HANDY. CONSULT OPTION PCA =PATIENT CONTROLLED ANALGESIA IN EXPERT PAIN MANAGEMENT CENTERS. DEFINITIVE TREATMENT IN YOUR CASE WOULD BE TO EXPLORE THE METASTATIC DEPOSIT AND TREAT IT THROUGH SURGERY/CHEMOTHERAPY/RADIOTHERAPY. CONCLUSION: CONSULT AN EXPERT ONCOSURGEON AND REVIEW WITH YOUR PET SCAN REPORT.CONSIDER TAKING UP PCA THANK YOU . TAKE CARE.