Breakage and retention of thoracic paravertebral catheter: a case report.

In this report, a paravertebral catheter fragment was retained in the posterior mediastinum for 2 years. The catheter was likely damaged during the insertion procedure. We suggest that catheters should not be withdrawn through the Tuohy needle, but be withdrawn together with the Tuohy needle. Although secure fixation of the catheter can be achieved with sutures, to reduce the risk of damage to the catheter, alternative methods, such as surgical tapes or skin glue should be considered. After removal of a catheter, its tip should be checked to ensure that the entire catheter has been completely removed. If a catheter fragment is retained within the patient, removal of the fragment should be considered according to the patient's condition and risks.