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Sensitivity of serum calcitonin and CEA levels at detection of recurrence
| Total number | Number of positive patients | Sensitivity (%) | Increase in sensitivity by adding CEA | ||||
|---|---|---|---|---|---|---|---|
| Calcitonin | CEA | Calcitonin | CEA | ||||
| Local recurrence | 25 | 25 | 14 | 100 | 56.0 | 0% | |
| Distant recurrence | 20 | 20 | 16 | 100 | 80.0 | 0% | |
CEA: carcinoembryonic antigen