Table 2.

Summary treatment details

Number of patients operated	41% (50/121)
Total number of surgeries performed	104 on 50 patients
Number of operative episodes per patient (each episode may include >1 procedure e.g., subtotal resection and placement of Ommaya reservoir under one anesthetic = 1)	59% nil (71/121) 41% one (50/121) 16% two (19/121) 6% three (7/121)
Patients with number of separately classified procedures (different procedures may have occurred under a single operative episode, e.g., subtotal resection and placement of Ommaya reservoir = 2)	59% nil (71/121) 22% one (23/104) 14% two (14/104) 5% three (5/104) 4% four (4/104) 2% five (2/104) 2% six (2/104)
Types of operations performed	30% biopsy (31/104) 25% ventriculoperitoneal shunt (26/104) 16% cyst drainage (17/104) 15% subtotal resection (16/104) 9% Ommaya reservoir (9/104) 4% complete resection (4/104) 1% endoscopic third ventriculostomy (1/104)
Surgical complication	6% shunt failure (6/104) 1% bleeding into tumor (1/104)
Chemotherapy	% (65/121)
Chemotherapy complications	65% none (42/65) 10% minor (7/65) 25% major/requiring change in regimen (16/65)
Radiotherapy	14% (17/121)
Radiotherapy complication	12% (2/17)
Proton beam therapy	8% (4/121)