Response of Tumor Size and Tumor Metabolism in Each Lesion According to Pathologic Features (n = 620)
| Characteristic | No. | Mean tumor size change (%) | P* | Mean SUVmax change (%) | P* | Mean TLG2.5 change (%) | P* |
| Histologic type | |||||||
| Adenocarcinoma | 516 (83.2) | −28.8 | 0.750 | −51.8 | 0.301 | −8.5 | 0.299 |
| Poorly cohesive carcinoma | 104 (16.8) | −27.4 | −46.2 | −67.7 | |||
| Differentiation (n = 516) | |||||||
| Well to moderate | 301 (58.3) | −30.8 | 0.208 | −54.5 | 0.178 | 3.1 | 0.567 |
| Poor | 215 (41.7) | −26.1 | −48.1 | −24.8 | |||
| HER2 status | |||||||
| Negative | 456 (73.5) | −20.8 | <0.001 | −45.5 | <0.001 | 10.0 | <0.001 |
| Positive | 164 (26.5) | −50.2 | −66.0 | −91.9 |
↵* Student t test was used to examine difference in values within each group.
Data in parentheses are percentages.