Imaging type of PFA-2c ependymomas compared with other PFA-2 subtypes and all other PFA subtypesa
| Lateral | Midfloor | Roof | |
|---|---|---|---|
| PFA-2c | 0 (0%) | 5 (100%) | 0 (0%) |
| PFA-2a and PFA-2b | 10 (30.3%) | 14 (42.4%) | 9 (27.3%) |
| All other PFA tumors | 43 (39.8%) | 46 (42.6%) | 19 (17.6%) |
↵a Ninety-eight subjects had subtype data available. “All other PFA tumors” includes the PFA-1 subgroup and the PFA-2a and 2b subtypes. The 15 subjects with PFA-1 subgroup ependymomas that could not be subtyped were included in the category of All other PFA tumors. The 8 patients with PFA-2 tumors that could not be subtyped were not included in this analysis.