Table 1.
Patient Characteristics
| All Patients | Indeterminate | |
|---|---|---|
| N=211 | N=113 | |
| Gender: Male | 53% | 47% |
| Race: Caucasian | 92% | 93% |
| Age | 64 | 63 |
| Smoking Status – Never | 21% | 19% |
| – Ever | 79% | 81% |
| Pack-years | 45 | 41 |
| Predicted FEV1 | 77% | 78% |
| Nodule Size (mm) | 29 | 24 |
| FDG-PET SUV (SD)a | 7.0 (5.6) | 6.6 (6.1) |
| Cancer Diagnosis | 168 (80%) | 73 (65%) |
| Adenocarcinoma | 70 | 28 |
| Squamous | 56 | 26 |
| NSCLC (not specified) | 15 | 7 |
| Large Cell | 6 | 1 |
| Small Cell | 5 | 5 |
| Bronchoalveolar Cell | 5 | 2 |
| Other Neuroendrocrine | 5 | 0 |
| Carcinoid | 3 | 2 |
| Melanoma | 2 | 1 |
| Lymphoma | 1 | 1 |
| Benign Diagnosis | 43 (20%) | 40 (35%) |
| Granuloma | 22 | 21 |
| Fibrotic | 7 | 7 |
| Inflammation | 6 | 5 |
| Hamartoma | 4 | 4 |
| Broncholith | 1 | 1 |
| Other | 3 | 2 |
Mean values are reported for age, pack years, FEV1, and nodule size
a
Scans with a reported maximum mean Standard Uptake Value (SUV) = 60 (28%), 151 scans did not have a maximum SUV reported.
SD – standard deviation