 Patient data such as vitals, labs and outcome measures will be recorded and analyzed. The data gathered both in the retrospective and prospective analyses will be used to assess utilization rate of thoracic epidural, and to determine if the use of thoracic epidural is associated with lower resource utilization and is cost effective. In both the retrospective chart review and prospective enrollment process, subjective pain, improved pulmonary function, amount of analgesia and overall clinical outcomes will be measured to determine if patients who received epidural catheters have significantly improved clinical outcomes than those patients who did not receive epidural catheter. 