Included patient characteristics (N = 40)
| Patient Characteristics | Value (SD) |
|---|---|
| Mean age (yr) | 61.5 (11.1) |
| Age range (yr) | 29–81 |
| Male/female ratio | 23:17 |
| Pathology | |
| Primary CNS large B-cell lymphoma | 40 |
| Prior WBRT | 5 |
| Median follow-up (yr)a | 3.01 |
| Total baseline MR imaging | 33 |
| Total baseline CT | 7 |
| Total follow-up MR imaging | 254 |
| Total follow-up CT | 10 |
| Mean number of MR images per patient | 7.60 (3.49) |
| Mean number of lesions on baseline MR image | 2.33 (1.14) |
| Disease location | |
| Superficial | 16 |
| Deep | 15 |
| Mixed | 9 |
| Particular disease distribution | |
| Midline crossing lesion | 10 |
| Multifocal, bilateral lesions | 16 |
| Induction responsea | 22 |
| Relapse after inductiona | 12 |
Note:—WBRT indicates whole brain radiotherapy; SD, standard deviation.
↵a One patient was lost to follow-up, and 5 stopped their treatment for palliative care and were not included in this analysis.