Qualitative Assessment Scale scores at diagnosis, post-chemotherapy, and recurrence for the 23 patients with abnormal cardiophrenic lymph nodes at diagnosis
| Qualitative Assessment Scale score* | Patients (n) | ||
| At diagnosis | Post-chemotherapy | At recurrence | |
| 4 | 1 | 1 | 13 |
| 4 | 1 | 2 | 1 |
| 4 | 1 | 4 | 2 |
| 4 | 1 | 5 | 1 |
| 4 | 3 | 5 | 1 |
| 4 | No scan | 1 | 2 |
| 4 | No scan | 4 | 1 |
| 5 | No scan | No scan | 2 |
*The Qualitative Assessment Scale (QAS) was used to classify the probability that a node represents metastatic disease by scoring size, heterogeneity, and architecture of the node. Using this scale, a score of 1 represents normal, 2 probably normal, 3 indeterminate, 4 probably abnormal, and 5 definitely abnormal.