Table 2.
Diagnostic characteristics of 18F-FDG PET/CT for peritoneal carcinomatosis
| Patient-based | Site-based a | |
|---|---|---|
| Total | 49 | 735 |
| Histological positive | 27 | 58 |
| Histological negative | 22 | 677 |
| True positive on 18F-FDG PET/CT | 25 | 44 |
| False negative on 18F-FDG PET/CT | 2 | 14 |
| False positive on 18F-FDG PET/CT | 4 | 4 |
| True negative on 18F-FDG PET/CT | 18 | 673 |
| Sensitivity | 92.6% | 75.9% |
| Specificity | 81.8% | 99.4% |
| PPV | 86.2% | 91.7% |
| NPV | 90.0% | 98.0% |
| Accuracy | 87.8% | 97.6% |
Remarks:aFifteen anatomical sites were scrutinized for the presence of peritoneal carcinomatosis (right subphrenic, right subhepatic, gastric serosa, lesser sac, left subphrenic, left perihepatic, right paracolic, left paracolic, POD, bladder flap, mesentery, omentum, large bowel serosa, small bowel serosa and pelvis regions)