Percutaneous cervical cordotomy for managing refractory pain in a patient with a Pancoast tumor: A case report

Figure 4 Trajectory of pain alteration. The yellow arrow and black dot represent the percutaneous cervical cordotomy. A: Numeric rating scale (NRS) score of pain during hospitalization. After the procedure, a pain-free period was noted. He complained of intermittent pain, which can be relieved by nonopioid medications, during the cancer treatment; B: Oral morphine equivalent dosage during hospitalization. After the procedure, the opioid dosage was tapered gradually.