TABLE 2.
Comparisons of potential risk factors in small‐breed dogs with pulmonary adenocarcinomas treated with surgery alone or surgery plus adjuvant chemotherapy.
| Variables | Number | Surgery only number (%) | Surgery + chemotherapy number (%) | P‐value |
|---|---|---|---|---|
|
Age, years Median |
48 | 12.0 | 10.0 | .05 |
|
Body weight, kg Median |
48 | 5.3 | 6.3 | .05 |
| Clinical signs | ||||
| No | 18 | 10 (55.6%) | 8 (44.4%) | .76 |
| Yes | 30 | 19 (63.3%) | 11 (36.7%) | |
| Tumor size classification | ||||
| ≤3 cm | 13 | 11 (84.6%) | 2 (15.4%) | .16 |
| >3 cm to ≤5 cm | 16 | 9 (56.3%) | 7 (73.7%) | |
| >5 cm to ≤7 cm | 14 | 6 (42.9%) | 8 (57.1%) | |
| >7 cm | 5 | 3 (60.0%) | 2 (40.0%) | |
| N stage | ||||
| N0 | 40 | 23 (57.5%) | 17 (42.5%) | .45 |
| N1 or 2 | 8 | 6 (75.0%) | 2 (25.0%) | |
| Margin | ||||
| Complete | 42 | 26 (61.9%) | 16 (38.1%) | .67 |
| Incomplete excision | 6 | 3 (50.0%) | 3 (50.0%) | |
| Histologic classification | ||||
| Papillary | 41 | 26 (63.4%) | 15 (36.6%) | .41 |
| Others | 7 | 3 (42.9%) | 4 (57.1%) | |
| CLCSC stage | ||||
| Stage 1 | 11 | 10 (%) | 1 (%) | .07 |
| Stage 2 | 26 | 13 (%) | 13 (%) | |
| Stage 3 | 11 | 6 (%) | 5 (%) | |
Abbreviation: CLCSC, canine lung carcinoma stage classification.