Cause of Single Functioning Kidney and Associated Level of Biochemical Tumor Marker
| Patient | Cause of single functioning kidney | Serum chromogranin A* (ng/mL) |
| 1 | Pancreatic body and tail lesion extend into left adrenal and left kidney, rendering kidney nonfunctional | 334→102 |
| 2 | Nonfunctioning left kidney detecting incidentally during workup for PRRT | 2,600→2,420 |
| 3 | Horseshoe-kidney NET; partial nephrectomy for removal of primary | 962→97.97 |
| 4 | Previous history of left renal cell carcinoma; nephrectomy done for same | 866.7→808.76 |
| 5 | Left ureter NET; left kidney nonfunctional because of ureteric lesion from time of diagnosis | 68.10→37.9 |
| 6 | Polycystic dysplastic right kidney recognized at time of workup for PRRT | 435.75→131.3 |
↵* Change from baseline to final analysis.