case_images: PMC3821125_01
case_images: Ultrasound images over the anterior neck at the level of the brachial plexus roots. A) Normal position of the brachial plexus roots when a 25G needle (arrowheads) was just introduced above the brachial plexus roots (arrow). B) The fascial sheath enclosing the brachial plexus roots (arrow) is indented producing a lengthening of the distance, compared to figure 1A, when the needle (arrowheads) was advanced further. This also resulted in paresthesia.
case_images: aapm-02-134-g001.jpg
case_images: PMC3821125_01_aapm-02-134-g001.jpg
case_images: fig672
case_images: Under ultrasound guidance, a 3.5 inch, 25 G needle was advanced to approximately 2-3 cms during attempts to visualize the needle tip (Figure 1).