| sometimes | 18 | degree |
| in order to examine extent | 11 | purpose |
| in some cases | 10 | temporal |
| biopsy → be → necessary | 118 |
| biopsy → be → required | 49 |
| biopsy → be → warranted | 8 |
| biopsy → be → must | 3 |
| biopsy → be needed in → patient | 3 |
| negative | neutral | positive |
| 0.200 | 0.724 | 0.076 |
| Raw frequency | 181 |
| Normalized frequency | 0.767 |
| Modifier score | 0.629 |
| Perplexity | 65.545 |