Figure 4

Presacral abscess treated by PEDI. L5-S1 infectious spondylitis was diagnosed in a male patient. The lateral radiograph showed L5 inferior endplate erosion (A). Sagittal T2-weighted MRI demonstrated presacral abscess (B). Postoperative sagittal T2-weighted MRI revealed the abscess was eradicated by PEDI (C). Postoperative lateral radiograph showed L5-S1 disc space collapse leading to spontaneous fusion (D).