ALK and non-small cell lung carcinoma: When the ADC group was separately analyzed, a young age (50.6 ± 11.4 vs. 58.9 ± 9.5; p < 0.001), high nSUVmax (10.7 ± 4.6 vs. 8.3 ± 5.2; p = 0.004) and low Ki67 score were significantly associated with positive ALK expression (Table 2).The other results were similar to those of the NSCLC groups.