Craniopharyngioma - long-term results following limited surgery and radiotherapy

Between 1950 and 1986 173 patients with craniopharyngioma were treated at the Royal Marsden Hospital with external beam radiotherapy either alone or following surgery. Four patients had complete tumor excision, 21 subtotal and 78 partial resection, 14 had biopsy alone, 34 aspiration alone and 22 had no surgery directed at tumor eradication. Seventy-seven (45%) were children (aged < 16 years). The 10 and 20 year progression-free survival (PFS) rates were 83% and 79%. There were no independent prognostic factors for PFS. The 10 and 20 year survival rates were 77% and 66% at a median follow-up of 12 years. After adjustment for mortality in the normal population, age and technique of radiotherapy (which corresponded with era of treatment) were significant independent prognostic factors for survival. The risk of death (corrected for mortality from natural causes and controlling for radiotherapy technique) for age groups 16-39 and ≥40 was 0.58 and 0.40 respectively, relative to a risk of 1.0 for the age group <16 years. Survival and PFS were not influenced by the extent of surgical excision. Visual field defect improved after radiotherapy in 36% of patients and visual acuity in 30%. We conclude that limited surgery and radiotherapy achieve excellent long-term tumour control and survival with low morbidity. (author). tabs