Fig 4. A 68-year-old female patient with chronic pain of the anterior aspect of the right leg and a tingling sensation in the L4 dermatome. MR imaging (not shown) showed degenerative spondylolisthesis at the L3/4 level with foraminal stenosis. There was no pain relief in follow-up of 2 weeks after a conventional transforaminal epidural steroid injection (TFESI) at the L3 level.