Table 2.

Characteristics of 19 pediatric PC patients in Helsinki University Hospital. For ordinal data: mean ± SD (min–max)

Age, females (%)	14.6 ± 4.9 (4–20), 17 (90%)
Clinical presentation	Incidental finding (1), headache (15), visual and oculomotor disfunctions (5), nausea and vomiting (6), psychiatric symptoms (2), sensory disorders (2), memory problem (1)
Preoperative mRS (patients)	0 (1), 1 (2), 2 (11), 3 (4), nai (1)
PC size in mm	Length 19.6 ± 5.5 (13–33.5); high 12.5 ± 3.9 (6–23); wide 15.7 ± 3.7 (9–21)
Surgical criteria	Solid tumor suspicion (8), hydrocephalus (7), cyst growth (5), visual disfunction by tectum compression (5), large cysts with minor symptoms (3), suspected fluctuant hydrocephalus (1)
Surgical treatment	Complete microsurgical resection by the supracerebellar infratentorial approach in all cases
Postoperative complications for medical treatment (events)	CSF leak (3), bacterial meningitis (3), small minimally symptomatic bleeding in the operative site (1)
Immediate mRS (patients)	0 (8), 1 (8), 2 (2), 3 (1)
Long-term mRS (patients)	0 (19)
CCOS total (patients)	15 (7), 16 (12)

CCOS, Chicago Chiari outcome scale; mRS, modified Rankin scale; MRI, magnetic resonance imaging; nai, non-available information; PC, pineal cyst; SD, standard deviation