Malpositioning of catheter tip.Contrast filling was only seen near puncture site at lumbar spine level (dashed arrow) and not at thoracolumbar junction via obtuse-angled catheter (arrow) on follow-up myelogram of 65-year-old male patient with inefficient cerebrospinal fluid drainage day after fluoroscopic-guided lumbar drainage. Malpositioning of catheter tip with loop was suspected in this patient, and patient was discharged without complications after re-inserting catheter.