Table 3.
Evaluation of variable imaging features and signal characteristics in benign and malignant lesions.
| Benign |
Malignant |
P-value | |||
|---|---|---|---|---|---|
| Frequency | Percent | Frequency | Percent | ||
| T1 | |||||
| Isointense | 9 | 56% | 16 | 46% | 0.065 |
| Heterogenous signal intensity | 2 | 13% | 3 | 9% | |
| Heterogenous with signal void | 2 | 13% | 0 | 0% | |
| Low signal intensity | 3 | 19% | 16 | 46% | |
| T2 | |||||
| High signal intensity | 8 | 50% | 16 | 46% | 0.332 |
| Heterogenous signal intensity | 5 | 31% | 9 | 26% | |
| Intermediate signal intensity | 2 | 13% | 10 | 29% | |
| Low signal intensity | 1 | 6% | 0 | 0% | |
| Enhancement | |||||
| Homogenous | 1 | 6 % | 18 | 51% | <0.001 |
| Heterogenous | 6 | 38% | 15 | 43% | |
| Heterogenous ring | 3 | 19% | 0 | 0% | |
| No uptake | 0 | 0% | 1 | 3% | |
| Faint | 3 | 19% | 1 | 3% | |
| Intense | 3 | 19% | 0 | 0% | |
| Relationship to surrounding structures | |||||
| Not invading | 10 | 67% | 17 | 52% | 0.028 |
| Invading surrounding | 1 | 7% | 10 | 30% | |
| Invading parapharyngeal space | 1 | 7% | 5 | 15% | |
| Indenting overlying muscles and skin | 3 | 20% | 0 | 0% | |
| Associated with another intracranial mass | 0 | 0% | 1 | 3% | |
| Lymph node | |||||
| Not significant | 3 | 19% | 10 | 30% | 0.545 |
| Bilateral cervical lymph node or positive lymph node | 6 | 38% | 14 | 42% | |
| Bilateral nonspecific | 7 | 44% | 9 | 27% | |