Table 1

Patients with brain tumour and the location, size, and histological diagnosis of the tumours

Values in parentheses are %; V=mean volume of tumours.
*Hemangiopericytoma (two); malignant lymphoma; craniopharyngeoma; undefined (two).
Sex:
    Male39 (39)
    Female62 (61)
Mean age (y)49
    Range (y)20–82
Location of tumour (n=97):
    Left45 (46)
        Anterior23 (51)
        Posterior16 (36)
    Right34 (35)
        Anterior15 (44)
        Posterior10 (29)
    Bilateral14 (14)
        Anterior11 (79)
        Posterior1 (7)
    Undefined location4 (4)
Tumour volume:
    Mean 45 ml
        Under 25 ml50%
        Over 55 ml25%
Diagnosis:
    Grade I–II glioma (V=42 ml)19 (19)
    Grade III–IV glioma (V=37 ml)22 (22)
    Meningioma (V=23 ml)33 (33)
    Pituitary adenoma (V=8 ml)8 (8)
    Acoustic neurinoma (V=4 ml)13 (13)
    Other* (V=18 ml)6 (6)