Comparison of Overall Staging with PET and PET/CT: Discrepant Results
| Patient no. | Overall staging* | Cause of incorrect staging | ||
|---|---|---|---|---|
| PET | PET/CT | |||
| 1 | Incorrect | Correct | FN Porta-hepatis lymph node | |
| 2 | Incorrect | Incorrect | FP Postsurgical liver inflammation | |
| 4 | Incorrect | Incorrect | FP benign adrenal tumor (myelolipoma) | |
| 6 | Incorrect | Incorrect | FN Periportal lymph node | |
| 14 | Correct | Incorrect | FN Peritoneal implants | |
| 21 | Incorrect | Correct | FP Bowel activity | |
| 25 | Incorrect | Correct | FN Liver mucinous metastasis | |
| 29 | Incorrect | Correct | FP Degenerative spine changes | |
| 34 | Incorrect | Correct | FN Bone metastasis misinterpreted as pelvic node | |
↵* Correct overall staging means that disease status of primary tumor/local recurrence, liver, intraabdominal/extrahepatic regions, and extrahepatic regions was correctly assessed. Incorrect overall staging means that any region was incorrectly assessed.
FN = false-negative; FP = false-positive.
Total of 36 patients had follow-up, pathologic proof, and correlative imaging allowing assessment of overall staging of disease.