Abnormal Diagnostic Test Results in Patients With Recurrent Disease During Scheduled Follow-Up Visits (n = 43)
| Test | No. (%) |
|---|---|
| CEA tumor marker | 19 (44.2) |
| Abdominal ultrasound | 17 (39.5) |
| Colonoscopy | 7 (16.3) |
| Chest x-ray | 5 (11.6) |
| CT scan | 3 (7) |
| More than 1 modalitya | 7 (16) |
CEA = carcinoembryonic antigen; CT = computed tomography.
↵a Combinations included CEA testing with abdominal ultrasound (n = 5), CEA testing with chest x-ray and abdominal ultrasound (n = 1), and CEA testing with CT scan (n = 1).