ADC mapping of lymphomas and carcinomas in the nasopharynx and oropharynx
| ADC Mapping (× 10−3 mm2/s) | Percentage of Tumor Area on ADC Map | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nasopharynx | Oropharynx | |||||||||
| Lymphoma | NPC | Lymphoma | PD SCC | MD SCC | WD SCC | |||||
| T2 Homo | T2 Hetero | T2 Homo | T2 Hetero | |||||||
| No. of patients | 7 | 8 | 17 | 5 | 4 | 3 | 5 | 7 | ||
| Extremely low (<0.6) | 68 ± 15 | 57 ± 12 | 51 ± 35a,b,c,d | 34 ± 25 | 10 ± 5a,b | 24 ± 25 | 15 ± 13a,c | 15 ± 22a,d | ||
| Low (0.6–1.2) | 32 ± 14 | 43 ± 12 | 48 ± 34 | 64 ± 25 | 74 ± 7 | 75 ± 26 | 68 ± 18 | 63 ± 14 | ||
| Intermediate (1.2–1.8) | 0 ± 0 | 1 ± 1 | 1 ± 2a,e,f | 1 ± 2a,g | 16 ± 10a,e,g | 2 ± 2 | 15 ± 19a,f | 19 ± 15 | ||
| High (>1.8) | 0 ± 0 | 0 ± 0 | 0 ± 0 | 0 ± 0 | 0 ± 0 | 0 ± 0 | 2 ± 3 | 3 ± 5 | ||
Note:—PD, poorly differentiated, MD, moderately differentiated; Homo, homogeneous; Hetero, heterogeneous; WD, well-differentiated; T2 homo/hetero, with homogeneous/heterogeneous T2 signals.
↵a Significant differences between lymphomas and SCCs, and between PD SCCs with homogeneous T2 signals and heterogeneous T2 signals (Mann-Whitney U test).
↵b P = .040.
↵c P = .048.
↵d P = .011.
↵e P = .001.
↵f P < .001.
↵g P = .019.