PET/CT Findings for Ipsilateral Regional Lymph Nodes in 41 Patients with IBC
| Correlative imaging | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Site | Patients with uptake | Mean size* (cm) | Mean SUV* | Biopsy | Total | Biopsy of 1 nodal site† | Distant metastases, no biopsy‡ | False-negative | False-positive |
| Axillary | 38 (90%) | 2.5 (0.7–4.6) | 11.7 (2.5–36) | 29 (71%)§ | 9 (22%) | 6 (15%) | 3 (7%) | 1 | 0 |
| Subpectoral | 19 (44%) | 1.3 (0.7–2.5) | 11 (2.5–34) | 4 (10%) | 15 (34%) | 8 (20%) | 7 (14%) | 1 | 0 |
| Supraclavicular | 10 (15%) | 1.4 (0.7–2.0) | 6.8 (3.7–12.6) | 5 (12%)‖ | 5 (12%) | 2 (5%) | 3 (7%) | 4 | 0 |
| Internal mammary | 9 (22%) | 1.2 (0.8–1.6) | 7.8 (3.7–13.7) | 0 | 9 (22%) | 6 (15%) | 3 (7%) | 0 | 0 |
↵* Range is in parentheses.
↵† These patients had abnormal regional lymph nodes at multiple sites, all of which were regarded as metastatic after biopsy confirmed that 1 site—axillary, subpectoral, or supraclavicular—was metastatic.
↵‡ In these patients, no biopsy was performed in view of distant metastases.
↵§ One patient had positive biopsy findings and negative PET/CT findings.
↵‖ Four patients had positive biopsy findings and negative PET/CT findings.