case_images: PMC4604746_01
case_images: Upper panel - situation after removal of the knotted catheter. Lower panel - the knotted catheter in greater detail, marks on the catheter are one cm apart.
case_images: IPRS-04-04-g-001.jpg
case_images: PMC4604746_01_IPRS-04-04-g-001.jpg
case_images: F1
case_images: After removal of the intact catheter, inspection revealed a true knot six centimeters away from the catheter tip (Figure 1 (Fig. 1)).