a–c. SE T1 (a) and axial CE fat sat (b–c). Without fat sat and Gd administration it is possible only to hypothesize the presence of S1 right periradicular scar because epidural material does not compress but surrounds the dural sack (a). (b) CE of scar surrounding edematous nerve root. With respect to recurrent hernia, the nerve root is appreciable along its course in axial sections (b–c)