Table 1. Patients’ characteristics and details of tumor.

Variables	Value
Sex
Female	61 (50.4%)
Male	60 (49.6%)
Tumor size (mm)	37 (30–44)
Age (years)	24 (9–41)
<3	11 (9.1%)
3–5	10 (8.3%)
5–18	35 (28.9%)
>18	65 (53.7%)
Tumor pathology
Ependymoma	37 (30.6%)
Medulloblastoma	29 (24.0%)
Astrocytoma	20 (16.5%)
Hemangioblastoma	7 (5.8%)
Cholesteatoma	7 (5.8%)
Choroid plexus papilloma	7 (5.8%)
Metastatic	4 (3.3%)
Non-Hodgkin lymphoma	1 (0.8%)
Other	9 (7.5%)
Tumor growth characteristics a
Lateral extension	34 (28.1%)
Anterior extension	98 (81.0%)
Caudal extension	69 (57.0%)
Superior extension	14 (11.6%)
No extension beyond the fourth ventricle	8 (6.6%)

Values are number of patients (%) or median (interquartile range).

^a Percentages do not add up to 100 because some patients had more than 1 growth characteristic.