Table 2.
Clinical, radiological and treatment characteristics of 181 CCM CCM: cerebral cavernous malformation, IQR: interquartile range, SRS: stereotactic radiosurgery.
| Clinical and radiological data per CCM | Number (%) |
|---|---|
| Previous surgery | 13 (7.2%) |
| Location adjacent to ependymal plane | 42 (23.2%) |
| Associated developmental venous anomaly | 26 (14.4%) |
| Number of pre-SRS hemorrhages | |
| 0 | 26 (14.4%) |
| 1 | 103 (56.9%) |
| 2 | 37 (20.4%) |
| 3 | 12 (6.6%) |
| 4 | 1 (0.6%) |
| 5 | 2 (1.1%) |
| Median (IQR) time from diagnosis to SRS, years | 0.9 (4.3) |
| Zabramski Classification | |
| 1 | 49 (27.5%) |
| 2 | 108 (60.7%) |
| 3 | 18 (10.1%) |
| 4 | 3 (1.7%) |
| Unknown | 3 |
| Dosimetric parameter per CCM, median (IQR) | |
| Target volume cm3, median (IQR) | 0.4 (0.9) |
| Margin dose Gy, median (IQR) | 12.0 (2.0) |
| Isocenter, median (IQR) | 4.0 (5.0) |
| Isodose line %, median (IQR) | 50.0 (10.0) |