Incidental Renal Lesion Detected on a Lumbar Spine MRI, May 2010
A 50 yo female with right L5 radiculopathy underwent a lumbar spine MRI which demonstrated lumbar spondylosis with a small L5 disc herniation (not shown). Incidentally, an incompletely visualized fluid signal lesion was detected within the left kidney. A followup CT discogram was performed, which partially imaged the left renal lesion (Figure 1). Because of recurrent fevers, symptoms and abnormal laboratory values after the discogram, the patient underwent a contrast enhanced lumbar spine MRI to exclude an infection. This study demonstrated the left renal lesion, which could not be characterized as a simple cyst (Figures 2-4). A followup ultrasound was performed for further evaluation (Figure 5).