Papillary glioneuronal tumour in a 4-year-old.

The recently described 'papillary glioneuronal tumour' is not currently included in the WHO classification of tumours of the CNS. We present the youngest recorded case to date, and only the 3rd documented in the paediatric population. The incorporation of this neoplasm into the WHO classification would facilitate its wider recognition, providing an opportunity to elucidate its natural history and determine an evidence-based approach to treatment.