 Following a discussion of the procedure with the patient and/or family, including its risks, benefits, alternatives and steps to prevent infection, informed written consent was obtained and documented in the patient's chart. The time-out form was completed to confirm patient identity and side/type of procedure. All operators present for the case performed standard preprocedural prep including hand washing, sterile gloves, mask and cap. The patient was prepped and draped in the usual aseptic fashion. Local anesthesia over the target area was obtained by 1% lidocaine. Targeted CT examination demonstrates a lucent lesion with a central sclerotic nidus in the calcaneus corresponding to the findings on recent CT and MRI examinations with the imaging characteristics most consistent with an osteoid osteoma. Using CT guidance, a 12-gauge OnControl core biopsy needle was advanced into the lesion and one 12-gauge core biopsy specimen was obtained and placed in 10% formalin. Subsequently, CT guidance was used to advance a Rita SDA RFA probe into the lesion. The lesion was heated to 90 degrees centigrade for 2 minutes at 45 W. The RFA probe was removed.The core biopsy specimen were hand carried to the Surgical Pathology labThe patient tolerated the procedure well without immediate complication. Routine post procedure instructions were communicated to the patient.ESTIMATED BLOOD LOSS: Less than 5cc. An adhesive bandage was placed on the patient’s skin.
CT-guided biopsy and radiofrequency ablation of left calcaneal presumed osteoid osteoma.