CT Guided Left Sacral Biopsy: The procedure and possible complications were explained to the patient and informed consent was obtained. CT guidance was used for the biopsy. The biopsy was performed using sterile techniques. Lignocaine local anaesthetic and IV Fent6anyl 75ug were administered. Three bone biopsies of the left sacral ala were performed with two specimens obtained. There were no immediate complications. The patient was recovered in the Radiology Department day ward.