Table 4.
Diagnostic performance of positron emission tomography/computerized tomography and computerized tomography in patients with various carcinoembryonic antigen levels
| CEA level (ng/mL) |
CT (%) |
PET/CT (%) |
||||
| Sensitivity | Specificity | Accuracy | Sensitivity | Specificity | Accuracy | |
| ≤ 3.4 (n = 26) | 57.1 (8/14) | 75 (9/12) | 65.4 (17/26) | 83.3 (10/12) | 85.7 (12/14) | 84.6 (22/26) |
| 3.4-10 (n = 29) | 78.3 (18/23) | 66.7 (4/6) | 75.9 (22/29) | 96 (24/25) | 75 (3/4) | 93.1 (27/29) |
| 10-30 (n = 34) | 86.7 (26/30) | 75 (3/4) | 85.3 (29/34) | 96.7 (29/30) | 75 (3/4) | 94.1 (32/34) |
| > 30 (n = 17) | 93.8 (15/16) | 100 (1/1) | 94.1 (16/17) | 100 (16/16) | 100 (1/1) | 100 (17/17) |
PET: Positron emission tomography; CT: Computerized tomography; CRC: Colorectal cancer; CEA: Carcinoembryonic antigen.