case_images: PMC6489597_01
case_images: Cervical plexus at C4 level.
case_images: JPR-12-1217-g0001.jpg
case_images: PMC6489597_01_JPR-12-1217-g0001.jpg
case_images: F0001
case_images: PRF of the cervical plexus was carried out in the interfascial compartment at C4 level (Figure 1).