Table 2.
Lesion characteristics
| No. | T | N | M | Stage | Localization | Histology | Classification | Previous neoplasm histology | Previous neoplasm localization | Lagtime between the two neoplasms (years)a |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 0 | 0 | Ia | R2 | ADC | Metachronous | ADC | L | >2 |
| 2 | 1 | 0 | 0 | Ia | L2 | Not performed | Synchronous or metastasis of primary cancer | Useless | R | ≤2 |
| 3 | 1 | 0 | 0 | Ia | L2 | Not conclusive | Synchronous or metastasis of primary cancer | Useless | R | ≤2 |
| 4 | × | 0 | 1b | IIIa | R2 (medium) R2 (inferior) |
Not performed ADC | Metachronous with intrapulmonary metastasis | SQC | L | >2 |
| 5 | 2 | 0 | 0 | Ib | L2 | SQC | Primary | – | – | – |
| 6 | 1 | 0 | 0 | Ia | L2 | Not conclusive | Synchronous or metastasis of primary cancer | Useless | R | ≤2 |
| 7 | 1 | 0 | 0 | Ia | L2 | ADC | Synchronous | SQC | R | ≤2 |
| 8 | × | 2 | 0 | IIIa | Mediastinal | SQC | Metastasis of primary cancer | SQC | L | ≤2 |
| 9 | × | 0 | 1b | IIIa | R1 (medium) R2 (inferior) |
ADC ADC |
Metachronous with intrapulmonary metastasis | ADC | R | >2 |
| 10 | 1 | 0 | 0 | Ia | L2 | SQC | Metachronous | ADC | R | >2 |
| 11 | 1 | 0 | 0 | Ia | L2 | ADC | Primary | – | – | – |
| 12 | 1 | 0 | 0 | Ib | L2 | SQC | Synchronous | Neuro-endocrine | R | ≤2 |
| 13 | 1 | 0 | 0 | Ia | R1 | SQC | Primary | – | – | – |
| 14 | 1 | 0 | 0 | Ia | L2 | ADC | Primary | – | – | – |
| 15 | 2 | 0 | 0 | Ib | L2 | SQC | Primary | – | – | – |
| 16 | 1 | 0 | 0 | Ia | L2 | Not conclusive | Metachronous | Useless | R | >2 |
1, central; 2, peripheral; ADC, adenocarcinoma; L, left lung; No., consequent cases; R, right lung; SQC, squamous cell cancer.
a
Lagtime was calculated between the start of the two treatments (surgery for primary and stereotactic body radiotherapy delivered by helical TomoTherapy for the second-primary lung neoplasm).
b
M1 was limited to the presence of an ipsilateral second neoplasm.