Presentation
Diabetic. Fever. Source of sepsis?
Patient Data

Trace of fluid in the right iliac fossa.
The large bowel is a little distended and fluid filled, as is the terminal ileum. No obstruction. Scattered colonic diverticulae.
Long linear filling defect in the left renal vein. Kidneys normal.
Trace of perihepatic free fluid.
Gallstones.
Case Discussion
An incidental finding of left renal vein thrombosis.
The long filling defect highlighting the asymmetry of the anatomy of the renal veins.
With the avid use of CT, often for very general clinical indications one needs to keep your eyes open for an array of incidental findings.
The incidental findings vary greatly in their significance.