Table III.
Pre-operative localization studies at NIH (n = 163)
| n | % | |
|---|---|---|
| Patients who underwent operation with non-invasive studies only | 71 | 44 |
| Patients who underwent operation with at least one non-invasive study | 92 | 56 |
| Localization study (%) | Number performed (%) | True positive (%) | False positive (%) | PPV |
|---|---|---|---|---|
| Non-invasive | ||||
| Neck ultrasound (US) | 161 (99) | 97 (60) | 19 (11) | 84 |
| Sestamibi | 163 (100) | 113 (69) | 5 (3) | 96 |
| CT, neck/chest | 162 (99) | 78 (48) | 21 (13) | 79 |
| MRI, neck/chest | 157 (96) | 66 (42) | 17 (11) | 80 |
| Invasive | ||||
| US or CT guided FNA | 15 (9) | 12 (80) | 0 (0) | 100 |
| Arteriogram | 80 (49) | 49 (61) | 4 (5) | 92 |
| Arterial stimulation venous sampling | 72 (44) | 34 (47) | 3 (4) | 92 |
| Selective venous sampling | 37 (23) | 27 (73) | 5 (14) | 84 |
PPV, Positive predictive value; FNA, fine needle aspirate.